A simple and sweet video showing the IOS Image Recovery procedure via xMODEM. To view the full 800x600 resolution video please visit; www.freeccnawor...
This is the best step-by-step configuration guide thus far. I was working on a 3750-48 POE switch that hadn't been upgraded since 3 years ago. I accidentally corrupted my flash files and was kicked in to rommon. Had to format the entire flash and used this video as a guide. Good job meen.
This saved my life today. Yes we are still using 3750s, and the gray market switch I got had a broken mode button and was COMPLETELY wiped when I got it. Nothing bootable about it. Couldnt use TFTP or anything to get the firmware on it, and this was my only option. Thank you for posting this.
Why is this process so hard to find on Cisco's website. This process is so easy, but when you look up this error you get everything but how to fix it. This is truly a life saver. Thanks
I can't wait to get home and re watch this video. Thank you so much. I'm struggling with the 2950 from ebay like you've mentioned. I can't wait to attempt to put the current ios from the cisco site on it, and get back on with the ccna training
I'm another happy viewer! Thank you so much. I deleted the IOS from a 3500 by mistake.. Working perfectly after following this vid. Very clear and precise! Thanks again!
Thanks, one switch saved... no clue why this EASY method is not all over the internet... all other methods out there involve complicated procedures/software/etc... thanks again!
I erased existing IOS image of Cisco 2960 Switch and installed a wrong one and the switch didn't boot. This video helped me to restore the switch to its original glory!!!! Thank you!!!!!
Yes this will work for the catalyst 2950 switch. Newer routers, such as the 2600 or later use the tftpdnld command from rommon to easily recover a corrupt or missing IOS image.
Hi Vladimir. I have another issue. While using/learning Xmodem to reinstall IOS on my Cisco 2509, I was trying the delete flash and wanted to delete the IOS and then reinstall IOS c2500-is-l.123-24.bin. I deleted the partition and flash. While at Router(boot) i reset the configure-register to 0x3922 and put in 0x3922, did a reload and pushed yes. Now when I boot up I get (see below). I know this is probably due to the baud rate that i changed on the router and said yes at the reload. How do I get back into the router. I am sitting at the router I cannot boot into.I am trying to google this to see how to get back into the router if my Terminal emulator will not let it boot. I am also trying to at boot-up Ctrl-Break into router using SecureCRT. It will not let me disconnect put in 115200, reconnect and then get in. I am also tried placing an AUI on the router with TFTP but I do not how to assign an IP to the AUI if I can not get into router(boot) mode Do not know what to do next. This is all I get in SecureCRT: xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx Thank you for all of your help.
@runderground Hi there it's me again. Just wanted to say thanks a lot for your video. I think the problem was the switch or something, because I bought a new one from ebay that had an old IOS flash and I followed your steps to the T "as they say" and thankfully now it's as good as new...... I'm going to try and fix my old and update you. Cheers...
Awesome Video! If anyone has an issue where the transfer just hangs, try stepping it down on the emulator and switch. I tried 57600 and it worked for me. I had Catalyst 3550 and 119200 did not work, not sure why.57600 still saved a ton of time. 8meg image took about 30min Thanks MAN!
Much thanks, It worked with MobaXterm and an USB to serial adapter. Only the transfer of my c2960-lanbasek9-mz.150-2.SE11.bin (12 MB) file took about 4 hours even with ad BAUD rate of 115200...
Tried to update a 2960G with a new Cisco ios ... not enough room so I saved the old bin image via tftp and then deleted it from the switches flash: to make room ... copied the new ios via tftp and it threw up on reload... now what?> Your tutorial saved me headache... copied the original bin image to a USB (since the network was down) - downloaded SecureCRT (Which took longer than your process with all their make an account BS) - and using your tutorial was able to XModem image back to flash and set the BOOT env variable. All I wanted was to flash it with a more robust ios that had web UI options and bam - 3 hours of work. Never again... I'll use CLI :)
Learn CLI first. Once you do, you will not want the GUI. Buy Cisco equipment or do some labs. You want something like a Cat 3550 or better that supports IPSERVICES (routing) and (K9) cyrptology. I get the .tar file has the SDM (GUI)you are are talking about. IOS & HTML directory rename flash:html, first & test tftp/backup image #verify /md5 old IOS with backup IOS MD5 hash #archive tar /xtract tftp: flash: #verify flash:newios.bin (config)#boot system flash:iosname.bin
Looking for gui software. cisco certified geeks say you should leran the CLI before using GUI. Thats like saying we must learn DOS before we can use Windows XP. This is just a way to keep people out of the competition.
for AIRCAP1602I user This method is the only way that I found worked to upload ap1g2-k9w7-tar.152-4.JA1.tar to Hardware. using Ether network did not work. I think the only way to change CAP1602 ot SAP1602 is uploading file by xmodem.. Thanks it really helped me.
hi there would really appreciate your help. I keep getting "xmodem : : I/O error" on my 2950 switch I followed every step you took on the clip. And I also downloaded the correct IOS from Cisco's website too.
i have upload a ios in cat 3560e through xmodem but it can showing a error that hardware not supported. i can again upload a ios image but in half it can show that memory is less.how i can delete ios image in romon mode please reply
Hi Vladimir. I have another issue. While using/learning Xmodem to reinstall IOS on my Cisco 2509, I was trying the delete flash and wanted to delete the IOS and then reinstall IOS c2500-is-l.123-24.bin. I deleted the partition and flash. While at Router(boot) i reset the configure-register to 0x3922 and put in 0x3922, did a reload and pushed yes. Now when I boot up I get (see below). I know this is probably due to the baud rate that i changed on the router and said yes at the reload. How do I get back into the router. I am sitting at the router I cannot boot into.I am trying to google this to see how to get back into the router if my Terminal emulator will not let it boot. I am also trying to at boot-up Ctrl-Break into router using SecureCRT. It will not let me disconnect put in 115200, reconnect and then get in. I am also tried placing an AUI on the router with TFTP but I do not how to assign an IP to the AUI if I can not get into router(boot) mode Do not know what to do next. This is all I get in SecureCRT: xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx Thank you for all of your help.
Hello my name is Elisa and I'm a tough CCNA student. Doing some exercises on 1/1 Cisco switch by mistake I deleted the configuration. Can you kindly help me to install an OS the switch model and Catalyst 3500 XL. I know this fact doesn't make me a model student!
I have a catalist 2950 for a lab, but i conect it to a router with internet and 5 minutes later it stop working and on the console it start to write random leters and simbols without sense,.Now I cant write comand lines it just keep shoing random caracter all over the screen. Any idea of whats happening, may be cisco locked it in some way?, please help!
I tried this, no luck. It just stopped right here: Starting xmodem transfer. Press Ctrl+C to cancel. Transferring /Users/debynum/Desktop/c3750e-universalk9-mz.150-2.SE6.bin...
After I do flash_init, it does not come out of that. It gets stuck in that command. switch: flash_init Initializing Flash... flashfs[0]: 3 files, 1 directories flashfs[0]: 0 orphaned files, 0 orphaned directories flashfs[0]: Total bytes: 15998976 flashfs[0]: Bytes used: 3072 flashfs[0]: Bytes available: 15995904 flashfs[0]: flashfs fsck took 16 seconds. ...done Initializing Flash. Boot Sector Filesystem (bs:) installed, fsid: 3 y What do i do when it gets stuck?
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This is the best step-by-step configuration guide thus far. I was working on a 3750-48 POE switch that hadn't been upgraded since 3 years ago. I accidentally corrupted my flash files and was kicked in to rommon. Had to format the entire flash and used this video as a guide. Good job meen.
This saved my life today. Yes we are still using 3750s, and the gray market switch I got had a broken mode button and was COMPLETELY wiped when I got it. Nothing bootable about it. Couldnt use TFTP or anything to get the firmware on it, and this was my only option. Thank you for posting this.
Why is this process so hard to find on Cisco's website. This process is so easy, but when you look up this error you get everything but how to fix it.
This is truly a life saver. Thanks
This was a big help! Didn't know what i was doing, and erased flash on a 3560. And this vid helped me recover it! Thank you!
I can't wait to get home and re watch this video. Thank you so much. I'm struggling with the 2950 from ebay like you've mentioned. I can't wait to attempt to put the current ios from the cisco site on it, and get back on with the ccna training
I'm another happy viewer! Thank you so much. I deleted the IOS from a 3500 by mistake.. Working perfectly after following this vid. Very clear and precise! Thanks again!
Thanks, one switch saved... no clue why this EASY method is not all over the internet... all other methods out there involve complicated procedures/software/etc...
thanks again!
I erased existing IOS image of Cisco 2960 Switch and installed a wrong one and the switch didn't boot. This video helped me to restore the switch to its original glory!!!! Thank you!!!!!
Still useful in 2021! Thanks
I had already reached a dead-end with a Switch that lost its code, this was very helpful. Thank you man!
JUST WOW! After 15 you are still rockin' thank you really much :D
Awesome video. I don't have to do this often and always fiddle-fart around trying to remeber how to do it. Thank you!
Using this in 2024 for our 2960x. Thanks for the help!
Yes this will work for the catalyst 2950 switch.
Newer routers, such as the 2600 or later use the tftpdnld command from rommon to easily recover a corrupt or missing IOS image.
Thumbs up you da MAN. My coworker hosed a production switch. Downloaded Hyperterminal and got her going with this video. Thanks again.
kick ass video! Starting a new job and heard a rumor that engineers there routinely tank their flash so having this is pretty handy
hey dude where can i download the ios please
Saved my rear. Found this video on a forum. Thanks for the detailed instruction.
thank you sooooo much you saved my life and my job
It will not let me SET BAUD;
switch: SET BAUD
Unknown cmd: SET
try set lowercase, not uppercase SET.
it worked on my switch. Thank you.
Hi Vladimir. I have another issue. While using/learning Xmodem to reinstall IOS on my Cisco 2509, I was trying the delete flash and wanted to delete the IOS and then reinstall IOS c2500-is-l.123-24.bin. I deleted the partition and flash. While at Router(boot) i reset the configure-register to 0x3922 and put in 0x3922, did a reload and pushed yes. Now when I boot up I get (see below). I know this is probably due to the baud rate that i changed on the router and said yes at the reload. How do I get back into the router. I am sitting at the router I cannot boot into.I am trying to google this to see how to get back into the router if my Terminal emulator will not let it boot. I am also trying to at boot-up Ctrl-Break into router using SecureCRT. It will not let me disconnect put in 115200, reconnect and then get in. I am also tried placing an AUI on the router with TFTP but I do not how to assign an IP to the AUI if I can not get into router(boot) mode Do not know what to do next.
This is all I get in SecureCRT:
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Thank you for all of your help.
Thank you. Was not able to sleep until I found is video.
@runderground Hi there it's me again. Just wanted to say thanks a lot for your video. I think the problem was the switch or something, because I bought a new one from ebay that had an old IOS flash and I followed your steps to the T "as they say" and thankfully now it's as good as new...... I'm going to try and fix my old and update you. Cheers...
You saved my catalyst 2960
Thank you for help
Awesome Video! If anyone has an issue where the transfer just hangs, try stepping it down on the emulator and switch. I tried 57600 and it worked for me. I had Catalyst 3550 and 119200 did not work, not sure why.57600 still saved a ton of time. 8meg image took about 30min Thanks MAN!
Awesome video you single handed got my 1 gigabit switch back to working, Thank You So Vey Much
Sweet, in the process of repairing a few old switches and one of them had this problem. Thanks!
Much thanks, It worked with MobaXterm and an USB to serial adapter. Only the transfer of my c2960-lanbasek9-mz.150-2.SE11.bin (12 MB) file took about 4 hours even with ad BAUD rate of 115200...
Tried to update a 2960G with a new Cisco ios ... not enough room so I saved the old bin image via tftp and then deleted it from the switches flash: to make room ... copied the new ios via tftp and it threw up on reload... now what?> Your tutorial saved me headache... copied the original bin image to a USB (since the network was down) - downloaded SecureCRT (Which took longer than your process with all their make an account BS) - and using your tutorial was able to XModem image back to flash and set the BOOT env variable. All I wanted was to flash it with a more robust ios that had web UI options and bam - 3 hours of work. Never again... I'll use CLI :)
Thanks a lot man. You saved my life.
Perfect tut. Thanks buddy, something that I hadn't done it quite some time. You saved me lots of time!
thanks man...i usually use ethernet to firmware cisco,this is new for me and it is work
I used terra term and worked fine, really good video, well explained, thanks
Nice video. Thank you for taking time and putting it on youtube!!!!
Great video, saved me from trouble. Thanks a lot!!
Excellent video!! Very helpful for us and accurate on our end the first time around. Great work, great video.
Thanks for the vid. That made my day easier at work.
million thanks...
Life saver.
This is an awsome video!!!!
very informative piece and easy to use thanx lex
you saved me on this.. i really appreciate it.
Nice to see that this video has helped you.
thanks for your help. switch is working fine.
Sir you are amazing!
yes, definitely it is a helpful video and made my day. Thanks
Man you are amazing and are a life saver!
YOU ARE A LEGEND. Thank you :)
In this video, I was using SecureCRT.
Thanks for the vid, very handy for new guys like me!
I love the way you say boot. Bwwut. Great tutorial.
You saved me! Thank you very much!!!
Good Job! Very good Explanation!
Man you are just awesome!!!!
excellent explained!
Learn CLI first. Once you do, you will not want the GUI.
Buy Cisco equipment or do some labs. You want something like a Cat 3550 or better that supports IPSERVICES (routing) and (K9) cyrptology. I get the .tar file has the SDM (GUI)you are are talking about. IOS & HTML directory
rename flash:html, first & test tftp/backup image
#verify /md5 old IOS with backup IOS MD5 hash
#archive tar /xtract tftp: flash:
#verify flash:newios.bin
(config)#boot system flash:iosname.bin
Useful vid, helped me reload an image onto a c2950.
Yup, agreed, you saved me hours, thank you so much!
Huge time saver. Thanks!
Thanks! I found this very helpful.
you saved my day. thank you.
Thank you, very helpful
Great JOB...thanks as your video was educational!
Well done, You save my life
you are a legend
You Saved My life thank you
هههههههههههههههههههههههههه
thank you, dear. you saved my life also.
Thank you so much, well explained.
this is for all cisco routers?
I have a catalyst 2950
Good video, very helpful.
I got an error "xmodem operation was canceled by remote peer" when i send the xmodem. Can someone help me with this?
Looking for gui software.
cisco certified geeks say you should leran the CLI before using GUI.
Thats like saying we must learn DOS before we can use Windows XP.
This is just a way to keep people out of the competition.
for AIRCAP1602I user This method is the only way that I found worked to upload ap1g2-k9w7-tar.152-4.JA1.tar to Hardware. using Ether network did not work. I think the only way to change CAP1602 ot SAP1602 is uploading file by xmodem.. Thanks it really helped me.
thank you so much
hi there would really appreciate your help. I keep getting "xmodem : : I/O error" on my 2950 switch I followed every step you took on the clip. And I also downloaded the correct IOS from Cisco's website too.
Thx!
It works on my cat 3550.
This tutorial rocks, much Thanks... :-)
Good video, I have Cisco 7206vxr w/NPE-g2 always into rommon and console- aux ports not working! .. any idea?
If you inadvertently type in the wrong BAUD rate, at the ROM monitor is it possible to fix that? :(
Hello, I'm having the same problem on a Cisco 3560 Switch and I can not reset the IOS via CLI. Would you help me? Thank you!
Very very good
Thank you
Thanks for this!
i have upload a ios in cat 3560e through xmodem but it can showing a error that hardware not supported. i can again upload a ios image but in half it can show that memory is less.how i can delete ios image in romon mode please reply
really worked .. Thanks !!
thank you, great Video
Hi Vladimir. I have another issue. While using/learning Xmodem to reinstall IOS on my Cisco 2509, I was trying the delete flash and wanted to delete the IOS and then reinstall IOS c2500-is-l.123-24.bin. I deleted the partition and flash. While at Router(boot) i reset the configure-register to 0x3922 and put in 0x3922, did a reload and pushed yes. Now when I boot up I get (see below). I know this is probably due to the baud rate that i changed on the router and said yes at the reload. How do I get back into the router. I am sitting at the router I cannot boot into.I am trying to google this to see how to get back into the router if my Terminal emulator will not let it boot. I am also trying to at boot-up Ctrl-Break into router using SecureCRT. It will not let me disconnect put in 115200, reconnect and then get in. I am also tried placing an AUI on the router with TFTP but I do not how to assign an IP to the AUI if I can not get into router(boot) mode Do not know what to do next.
This is all I get in SecureCRT:
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Thank you for all of your help.
Hello my name is Elisa and I'm a tough CCNA student. Doing some exercises on 1/1 Cisco switch by mistake I deleted the configuration. Can you kindly help me to install an OS the switch model and Catalyst 3500 XL. I know this fact doesn't make me a model student!
Thanks its grate help for me
I have a catalist 2950 for a lab, but i conect it to a router with internet and 5 minutes later it stop working and on the console it start to write random leters and simbols without sense,.Now I cant write comand lines it just keep shoing random caracter all over the screen. Any idea of whats happening, may be cisco locked it in some way?, please help!
Olmo Kobie change baud rate value and check
Thank you buddy!
thanks it worked correctly
Bro you are great! yoyo
I cannot get into rommon - seems the boot is also broken. I have a cisco 877
How do I upload a new rommon? Thanks
Restoring IOS with XModem ... Happening Now!
Very slow but helpful, thanks
where can i download a cisco catalyst 2950 sx-24 ios >> please need help here ( i dont have a cisco account )
The GNS3 IOS image can work on real cisco router?
Gracias / Thanks nice video
I tried this, no luck. It just stopped right here:
Starting xmodem transfer. Press Ctrl+C to cancel.
Transferring /Users/debynum/Desktop/c3750e-universalk9-mz.150-2.SE6.bin...
Great video. Saved my ass
After I do flash_init, it does not come out of that. It gets stuck in that command.
switch: flash_init
Initializing Flash...
flashfs[0]: 3 files, 1 directories
flashfs[0]: 0 orphaned files, 0 orphaned directories
flashfs[0]: Total bytes: 15998976
flashfs[0]: Bytes used: 3072
flashfs[0]: Bytes available: 15995904
flashfs[0]: flashfs fsck took 16 seconds.
...done Initializing Flash.
Boot Sector Filesystem (bs:) installed, fsid: 3
y
What do i do when it gets stuck?
just i want to say you thank you very very very much the video
thanx for the post
thanks a lot. how as in the other comments you are legend