Hi

I, like many others it seems, have an issue where after a long storage of the drone it no longer transmits video.

It seems like there are two different solutions:

• Downgrading the firmwares of the drone
• Manually programming the board by a serial interface
  

This video describes the second option however it seems like I have a module that they don't, 0800. Is this not a viable solution then?

https://www.youtube.com/watch?v=boK1ZFy0phw

The first option seems to not work that often and finding old firmwares seems difficult.

Faults:

• In the Go App there is only a gray to black gradient. No video feed or errors. The camera is still controllable and the images are stored on the sd-card.
• The first firmware update on the drone took a long time and failed. After that the updates fails after a few seconds with this log:
  

[00015538]Version checking[1]...
[00015617][03 06][00] v2.4.20.50 -> v2.4.20.50
[00015697][03 05][00] v34.2.0.9 -> v34.2.0.9
[00015754][04 00][00] v1.48.0.0 -> v1.48.0.0
[00016082][11 00][00] v1.8.0.0 -> v1.8.0.0
[00016197][11 01][00] v1.8.0.0 -> v2.0.0.33, firmware v1.8.0.0 not support.
[00016250][11 01][00] v1.8.0.0 -> v2.0.0.33
[00016426][12 00][00] v1.12.0.0 -> v1.12.0.0
[00016517][12 01][00] v1.12.0.0 -> v1.12.0.0
[00016600][12 02][00] v1.12.0.0 -> v1.12.0.0
[00016706][12 03][00] v1.12.0.0 -> v1.12.0.0
[00029261][15 00][00] device not detected.
[00029344][17 00][00] v1.1.1.7 -> v1.1.1.7
[00029462][17 01][00] v1.0.2.7 -> v1.0.2.7
[00029524][19 00][00] v1.0.8.96 -> v1.0.8.96
[00029570][01 00][00] v1.32.5432 -> v1.32.5432
[00029621][01 01][00] v1.32.5432 -> v1.32.5432
[00042171][08 00][00] device not detected.
[00042285][09 00][00] v4.1.0.0 -> v4.1.0.0
[00042331]Packet upgrade failed at version checking.


Does anyone have any experience with this and have som more conclusive information?

Br
Adam

So, the drone now works.
Since there were issues before trying any firmware updates I decided that it had to have been the memory gone corrupted.

These are the resources I used:

https://phantompilots.com/threads/fix-no-video-feed-black-screen-no-image-transmission-no-fpv-on-ph3-pro.133487/              (Troubleshooting diagram)
https://www.youtube.com/watch?v=boK1ZFy0phw      (Flashing process)
https://forum.dji.com/forum.php? ... =157684&pid=2153213               (Translation)

Used for sanity check:

https://phantompilots.com/threads/lightbridge-firmware-problem-and-solution-firmware-version-not-found-by-dji-assistant-tool.77073/
https://phantompilots.com/threads/fixing-flash-in-dm365-chip-within-ph3-pro-gimbal.127310/
https://phantompilots.com/threads/no-image-transmission-signal-p3p.116019/post-1261767

NOTE:
I accidentally ripped the BTO0 pad. To solve this I scraped some of the soldermask between the pad and the closest chip, and the soldered to the trace instead.
I don't know if I actually got contact but the flashing process didn't give an error and the image transmission is back.
If I were to do it again I would solder the same wire to both pads or use a more malleable wire.


All credit goes to the original creators.