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Linksys MX4300,# Error: "update_both_images" not defined , why?

Putty terminal is black with no data after router boot. Serial USB cable is well connected but there's no data so I can't type anything

I have WRT1900AC v1 Linksys router. Problem is that I have flashed the OEM firmware (partition 1) and the router does not allow me to configure it since Internet link is solid white light and have no Internet connection. I have to perform 3 turn off and turn on steps to go back to partition 2 where Openwrt is located. Will this procedure fix the issue I have? Everything came up to me because Linksys is giving me less speed (200 MB) 5 Mhz frequency and my ISP gives me 400 MB contract. I have tested cable between two routers and works fine. Ethernet ports have been tested and Internet speed is around 400 MB. Wireless is the main issue I have. Is there any possibility that Openwrt has locked the 5 Mhz frequency? That why I need to restore the router with the OEM firmware but it is impossible.

Six years later, I used this to unbrick a WRT32X. Thanks!!

I bought a ttl cable but the pin connector is extremely loose.

Awesome thank you so much!!

Welldone comprehensive one

Thank you for making published procedures easy to understand

Hi, why the router is not auto boot? What does it mean?

2 notes that people might need if they have issues.....file might have to be named "rango" and serial cable drivers might have to be searched for and installed...thx for the clear instructions

will this same process work for a ASUS router?

This was a great video that allowed me to restore my 3200ACM. I had issues running the "run update_both_images" but that was solved by running "env default -a" before running any of the commands. The firmware installed successfully, but gave me an error about nandboot and altnandboot not defined. This was resolved by running the following 3 commands separately in marvell "env default -a" "saveenv" "reset". Maybe had I ran the 3 commands first then I would not have needed to flash it.

Pretty good video. One very funny note. I have two WRT units. One running LUCI DD-WRT (3200) and the second one is stock (1900) for good 3 hours I was trying to connect to the serial port because I know a few years back I installed it permanently in the unit with a hole and snaking out the cable and everything. After several hours of trying everything including different drivers and bands and other settings in Putty and device manager I gave up. The next morning I decided to look what was going on and I found out all this time I was trying to connect to the 3200 LUCI router when the cable was originally connected to my original WRT unit AKA 1900 ..... so yeah always check proper cable connections and units it's connected to :D I am actually interested in more advanced or perhaps a bit more videos on how to go from stock to DD-WRT I would think it's the same thing just use DD-WRT image instead of l OEM but again would love to see more videos on what possible with serial connection, perhaps some NAND / DRAM / OS manipulation and/or firmware modification. Good video, Cheers !

I have used this video several times over the past few years. This last time it was a Linksys 1900ac router. The video does not show how to remove the back black panel. I just used a screwdriver and started separating the cove at the front tabs, on both sides until I wired to the back middle. It the popped off. One of the back antenna wires popped off when I folded the black cover over to the side. I just looked for the little jack on the back of the board. I did have an issue with the setenv firmwareName setting. During the run command it kept saying it could not find the file blk-mamba.128mb.img. I tried it from the beginning of the setup and always says the same thing. I just changed the file in the tftp directory to match this name. It worked fine.

Hi, I followed all the steps until the last, the putty showed ‘tftp error file not found’. I don’t know why it was

Thank you so much for this video i was able to bring my wrt32x back to life!

Will this work on Cisco Linksys e3000 v1? I bricked it trying to install DD-WRT. I would like to go back to the stock firmware first. Anyone? 📶

I need to interrupt boot but when I press any key (or spacebar) it continues to boot - any ideas?

i have a wrt 32x, but the terminal stays black, nothing populates it. Granted i'm using a different usb to serial device, the good old CH341a, in TTL mode. followed every step exact, but nothing happens...

Did you try switching the boot partition?

Saved my router from the bin... I have the Venom firmware and ran into a few issues. Putty did not "see" the router, I had to swap the white and green wires. I then then ran into another issue, get getting T T T T T when trying to write the firmware and then it would just time out. I had to disable Windows Firewall and it worked immediately after that.

Thanks its work.... 100% . Excelent Tutorial... ;-).... cheers my friend.

Hmmm, terminal does not accept my keyboard entries. So I'm not able to stop bootup. Serial port set to 115200 com etc.

Nice job. Thank you

I hit the space key but in putty, it gets stuck on "starting kernel" Not sure what to do next. It never goes beyond that point (Its the 1900 model) Edit: I ended up trying my new Adafruit USB-C uart cable and it finally was able to get to the "Marvel" prompt. :) A few more tries on my old cable and, it decided to not show up in putty at all. (Maybe I fried it, idk. I never hooked up the 3.3v line) Maybe my other cable is on the way out. lol. Strange cause, I got that one from Adafruit as well. It works!! Thank you so much for the tutorial! I'd be lost trying to figure it out myself.

I just used this to unbrick my WRT3200acm due to upgrading with a bad openwrt load. This procedure worked perfectly. Thanks very much!

Great Video, thank for taking the time making this video. Eady to follow it worked for me on the first attemp

fantastic step by step guide i might try it soon

Very good tutorial. Able to understand from beginning to end. Thanks.

Excellent tutorial, thanks! 👍

Can you make a video for the Linksys AX3200 router?

Nice! Thanks for the tutorial.

when i type "run update both images" i get update not defined. anyone else or sugguestions?

Working great on a Linksys WRT3200ACM router. Its back to Life :-) Many thanks for the tutorial!

You rock! TY! TY! TY! MGBY!

Does this work with the Linksys WRT 32X ?.

Can I do that with the programs without any internet straight to the computer from the router or vice versa

Thanks for the tips. I called my area IT persons and businesses and all but one were scared to attempt this even after emailing them your video link instructions. None of them even had cables, so I offered to buy and give them a cable and still pay them. Everyone made excuses asking for money despite their zero promises for completion.....So, I amazon ordered cables from your links. Hopefully I will be up and running soon. Thanks again.

Hi Crooked , PL2303HX USB to TTL UART RS232 Converter Cable, is this model can use for Linksys EA9200 AC3200 ?

I usually don't like video instructions (can be done a lot quicker in plaint text imho), but you did save the day for me!!! Thanks for that :) A few remarks for anyone coming from the wrt32x: After connecting the serial TX of the modem and then powering the modem, it will not boot at all. After unplugging the tx it will start booting, and then enter bricked state unless you send the asci code: ctrl+c (alt 3) within 1 sec of booting (you can spam the "ctrl+c"). Then you can reconnect the tx and talk with the modem over serial and do the instructions of the video.

Found a reason to dust off my WRT3200ACM which already had dd-wrt on it, went to update to a newer version (mine was over a year old) and BRICK!!! I recall all the other instructions when I was doing more with dd-wrt and yours is by far the easiest to follow. BUT I have a question. I can get all the way to the point where the auto-boot countdown timer starts (video 8:45) and no mater what I do I cannot get it to stop the boot. I have checked the pin connections, changed to a wired keyboard from Bluetooth, still no luck. If anyone has any recommendations I would really appreciated it.

Super!!! I did the really stupid thing: I was playing with a Netgear X8 R8500 and was about tho flash it with DD-WRT. And there it / I went wrong, I flashed my WRT1900ACS running DD-WRT with the DD-WRT image of the Netgear...... Oops! Your movie saved the (and my ) day! Thanks a lot for posting it!

I did everything right but when I run putty prompt and when it time to press any key to stop autoboot, I tried to press space and even try to press other key beside "space" to stop the autoboot but it wouldn't stop the autoboot. Anyone know the solution to this?

can you do this on a linsys e3000 I have 2 with openwrt bad flash lol I have the jtag usb cable but I need to solder pins on the router's motherboard but I'm thinking I'll mess up. or if anyone has a video that shows how to please refer me to it. thanks. I know how to weld but not solder to a board hahahaha laterz thanks. great video.

Awesome...! worked perfectly for me. Did it on a wrt1200AC. Thank you

Help. I can't get this to work. I have the setup in the video but when I run "update_both_images" I just get "T"s in PUTTY. Tftpd launches a transfer bar window but no bytes are sent. Read out in Tftpd 0% then "err". port is 69, security none. What am I missing?

I’m sincerely thankful, you saved my ass i just unbricked a wrt3200acm with this method, one difference is with my router to get any console output, immediately after the power cycle i have to lift the rx pin and put it back in again, i get no power led and no boot otherwise, also i should mention that PuTTY does not allow terminal input unless you change the default flow control from XON/XOFF to None in the serial options.

Legend mate, thank you.