RadioMaster MT12 How to Update EdgeTX Firmware

[@TheBasil36]

Helpful, thanks!

[@wojciechtarka166]

Thank you, that's very helpful. Good job! Regards!

[@babupranav]

Thank you this is very helpful. Could you please also make a video showing how to update the 4 in 1 multi module firmware?

[@the-happy-RC-flyer]

Yes I will do that for you in the near future for you.

[@michaelrajca6043]

bill do you or can you make a video on updating the firmware of a radiomaster nano external 4 in 1 module that i have on my elrs radio. im a little confuased. i managed to update the edge tx like in this video but i am having trouble updating the elrs on the mt12 even after folowing all the steps you laid out in your video. i am at the poiunt of updating my external module but not sure on how to proceed. i just want to make sure i have all the lua scripts and latest pro tocols for of brand rxs. thank you

[@the-happy-RC-flyer]

This video will help you. kzbin.info/www/bejne/bWiUn2SCp9WqndUsi=327BWoSb31GffOU5

[@JerrySpeedRC]

Is this for MT12 ELRS version ? not found info id 4in1 or ELRS

[@the-happy-RC-flyer]

It is for both ExpressLRS or MPM versions.

[@JerrySpeedRC]

already done -> next step SD update done to. In my radio was message "locked flash protection" finallynaftwr second attempt finished with success.

[@BreydonsRC]

I have tried to update the firmware on two different computers. Neither will work. My Desktop says Failed to execute 'open' on USB device; access denied. So I tried it on my laptop, and in device manager I see an exclamation point on the SRMBootloader device. I tried updating the driver, and that does nothing. So I tried the manual method, but it says to hold the T1 and T4 to center while powering on yhe radio. What does it mean "hold to center"?

[@the-happy-RC-flyer]

What radio are you trying to update? Are you sure the cable you are using is a data cable, the one that came with the radio? Some usb cables are only for charging.

[@BreydonsRC]

@@the-happy-RC-flyer Radiomaster MT12. And yes, the cable came with the radio. I just unboxed everything, so it is brand new.

[@BreydonsRC]

How do I launch the radio so it flashes the firmware bin file that I stuck in the Firmware folder on SD card? Instructions say hold T1 and T4 to center and power on the radio, but I have no idea what that means since those buttons only have a left and right direction. There is no Center position on the buttons.

[@the-happy-RC-flyer]

Is you computer detecting the radio when you plug it in you will hear two tone bleep.

[@BreydonsRC]

@@the-happy-RC-flyer i got it flashed the manual way.

[@XInfiniteXTsukuyomiX]

my MT12 will not display on bootloader website, i couldn't find device on my computer when its turned off. i did all your steps and nothing is going on. turned off the controller removed the battery and connect a usb c cable and i still wont connect, when its turned on i click the storage and still the same thing and this won't bind to any other receiver.

[@the-happy-RC-flyer]

Firstly is your computer beeping to show your radio is connected to your computer when you plug it it?

[@michaelrajca6043]

hi bill. i tried to update my mt12 and did everything like you did but when i get to add new device and hit it, i do not get stm32 bootloader for a choice.

[@michaelrajca6043]

maybe its for mpm radios i think. i have the elrs version with an external mpm module.

[@the-happy-RC-flyer]

Is your computer beeping when you plug the MT12 in?

[@michaelrajca6043]

@@the-happy-RC-flyer yes it beeps once to acknowledge it like in your video. its when the devices screen shows up stm 32 bootloader doesnt show as a choice

[@michaelrajca6043]

@@the-happy-RC-flyer bill when i get no opttion for stm 32. only some other options and 1 of them is controller so i hit it and when i hit flash i get a prompt hat says your device has no dfs avaliable my peoblem is that stm32 wil not show up

[@the-happy-RC-flyer]

@@michaelrajca6043 This video should help you. I think you have a driver problem please see link Go to 1 minute 47 seconds Driver Problem Solved ‪kzbin.info/www/bejne/lafFnWScj7Jlesk‬

[@kjkareemslim]

Hi I've been flowing all your steps to update my Mt12 and it keeps saying can't erase existing firmware what could I be doing wrong

[@the-happy-RC-flyer]

Hi, I have not come across this problem before. What operating system does your computer use and is your computer detecting your radio when you plug it in?

[@kjkareemslim]

@@the-happy-RC-flyer I'm not really computer smart if you mean by windows 7-10 yes computer detect the radio. I will Make a video and send to you

[@the-happy-RC-flyer]

@@kjkareemslim Great send me the video and I will take a look.