Cannot flash external modules on Tlite (and other) with 2.7.0

[phileville]

Describe the bug
I am not able to flash my external LRS module on the Jumper T-lite after updating to the 2.7 RC1. When attempting it gets stuck on reseeting device and then displays "Device not responding" and the fails. When I rollback to 2.6.0, I am able to update the external module as expected.

To Reproduce
Update radio to 2.7 rc1
Attempt to flash external module firmware from the file explorer on the radio.
It will fail

Expected behavior
It should complete flashing as normal.

Screenshots
If applicable, add screenshots to help explain your problem.

General information

• EdgeTX version 2.7.0 RC1
• jumper T-Lite, Ghost nano module

[pfeerick]

So this is a Ghost Nano module, which you are running ExpressLRS on? And for updates it's flashed via the transmitter (like the HappyModel_ES915TX)?

Unfortunately I won't be able to reproduce or test myself as my T-Lite ELRS (ES24TX Lite) is wifi or USB update only, so hopefully something will jump out in the code as the culprit.

[phileville]

Yes, it is flashed with ExpressLRS and I have to flash it either with the transmitter or the ST link. Like I mentioned, it seems to hang when initially trying to reset to flash...then it gives the device not responding error and fails.

[raphaelcoeffic]

I could probably try with my MPM-lite, it uses the same protocol. By the way, this is using software-serial on the reception side, so it could be a bit touchy.

After some tests, it seems flashing a iRange iRX4-lite (MPM) on the T-lite works perfectly as usual.

[raphaelcoeffic]

@phileville phil, forget about what I said: it is not using software serial, it is done on the S.PORT pin, which is far better as it is hardware serial rather than software serial.

And, this is one of the very few things that hasn't changed a bit.

[pfeerick]

iRange iRX4-lite

Damn you... when I was looking for Nano form factor MPMs I only saw the TBS one... now I have to go and order this one! 😆

[JrminLin]

My X9D+ with Namimno FLASH can't flash ELRS FW via the transmitter on 2.7 RC1 RC2 too, but 2.6 is OK.

"Firmware update error
Device not responding
[EXIT]"

[update 2022.4.15] Same on TX16S.

[deadbytefpv]

Same on my TX16S with the R9M ACCESS flashed with ExpressLRS

Firmware update error
Device not responding

R9M would restart as indicated by the ELRS start-up tune, but then the message would appear.

[a1j]

Confirmed, flashing is not working on 2.7. Downgrading to 2.6 fixes that.

[Fumes74]

Same here, TX16S with R9M, can't upgrade on 2.7.

Firmware update error
Device not responding

[Kaggen67]

Can confirm that flashing R9M 2019 Access module (RM TX16S) on 2.7.0 don't work, but works on 2.6.0. Unfortunatly i didn't see this issue before i posted my own. :/
EdgeTX/edgetx.github.io#44

[a1j]

There is no power enabled on the expansion interface during flashing.