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Yes. FYI. Some batches of10W versions of this radio had manufacturing problems with the brightness of the LCD screen. However TYT now seemed to have resolved their manufacturing problems. 5W versions didn't ever seem to have this problem

Its well documented that Baofeng swap the USB D+ and D- data connections in their cables, compared to other manufacturers like TYT and Anytone etc.

i think so

DR 1801 will never be possible. It can't be updated because it does NOT use a normal CPU and chipset, it only contains a Chinese DMR + RF module used in some mobile phones, with interface only via RS232

@@vk3kyy never say never. What about MD380UV or MD390UV.

G4EML designed a remote head system. See www.opengd77.com/viewtopic.php?t=3040 Or google "opengd77 MD9600 remote head"

@@vk3kyy thank you been looking everywhere for one lol

Is there a difference in the versions of the radios if so what are they?

Using a external GPS module reduces signal loss down the RF cable. Many commercial radios use external serial GPS modules, e.g. the Codan HF transceivers use this method. However using a GPS module that has a RF socket will also work

@@vk3kyy yes, but those provide a proper multipin connector to it, while this has only an UFL. This was meant to have just an antenna, with a SMA to UFL pigtail for the internal pathway, no actual internal antenna. Maybe it could support an active antenna by sending power through the coax, see PCB traces.

OK. Thanks

Not at the moment, because its much more difficult to disassemble and reassemble the GD-77

Yes. Voice prompts work like on the other OpenGD77 firmware. I do not have any other radios on my 'hit list'. There are very few other radios which use or used the same chipset as in all the supported radios. i.e The C6000 DMR + FM DSP chip. Newer radios use a combined CPU + DSP chip called a C7000 which is a Chinese product with no support for any developers outside China to use it. Even inside China only industrial companies can access the programming tools to use it. There are some older radios, like the Aluiance HD1 which I think may use the same C6000 chip, but its not a radio which sold well, and its no longer manufactured, and even getting hold of one would be difficult, so its unlikely I would have the time etc to port to that radio unless someone gave me several of them to take apart etc

You'd need to read the OpenGD77 User Guide, because there isn't a features list. Definitely NOT supported by OpenGD77 is : No DMR SMS/Text messaging. No Dual Watch No DMR Encryption No DMR Dual Capacity Direct mode No DMR audio recording probably there are other things it can't do.

@@vk3kyy okay, I got it now. Simply, openGD77 does make your radio more worth than it was before :D Very nice firmware! You developed it? Nice job dude. But I can't use it. I need encryption. I don't live in the US and encryption is a basic right in my country. Like the second amendment in the US. Why is no encryption support? Do we get a OpenGD77 version for non-us citizens with encryption support in the future?

There definitely is audio in this video

Weird silent on iPad. Will check pc tomorrow 😢. Seems to work on iPhone tho. found it, sound only on left channel. I use one earpiece on the left…

@@doccybug OK. Looks like you are correct, there only appears to be audio on the right channel. I think this must be something to do with the video post production program I use. (KdenLive) I don't know if TH-cam would allow me to upload the same video again with this problem fixed. I will need to check Edit. I just checked and once a video is uploaded its not possible to replace it. I could completely delete it and make a new video with the same name I suppose, its just the links etc will be lost and also people would get notified that there is a new video when in fact its the same one again, just with audio on both channels

No such thing as 'regular baofeng programming cable' Baofeng use many different cables for their radios. The cable from some other Baofeng radios, e.g. Baofeng RD-5R can be used, but NOT UV-5R or many others Cable from TYT radios is NOT compatible, but if you have a TYT cable e.g. MD380 cable, it can be modified by swapping the 2 data wires (normally green and white in the cable)

@@vk3kyy thank you

Translates to "The rt3s battery malfunctioned as a result of installing it backwards. What kind of repair is done? Which parts should be changed?" So this has nothing to do with the firmware. Goodness knows how you managed to install the battery backwards and what damage you did to the internals of the radio. There is no schematic for this radio, so your best option is to open the radio and see what things are burnt.

firmware files have been packaged as .zip for several months because the firmware is now separated into firmware executable and language pack, as file size of both the firmware executable and all the merged languages was larger than the total ROM of the MCU in the radio You need to use an up to date version of the OpenGD77 CPS which supports the .zip packaged files

@@vk3kyy I unzipped the file and installed the Boot. Installed CPS but it wants a Serial Port. I have the USB device in DFU mode. How do I get that to work?

@@VK2AHB As I said in my previous post. You need to use a version of the OpenGD77CPS which supports handling ZIP FILES. You CAN NOT unzip the file and use the contents Also. The firmware update is not via COM port on any supported radio. The UV380/DM1701 use the STM32F4 series MCU's and use STM's Device Firmware Update system including the STM DFU device driver. Search TH-cam you'll find loads of example of people showing you how do update the firmware.

@@vk3kyy Hi Roger, I found the right zip file and it loaded. THanks.

Baofeng use different cables to TYT. You need to use the came that comes with the radio. Yes. It has a colour screen and the OpenGD77 now has colour themes See www.opengd77.com