I have 1.11.20 installed on the AC. The GO app says the RC firmware version is 1.2.6 and needs to be upgraded.
I tried to install the 4 previous versions from v01.07.0060 to v01.11.0020 and all of the logs say "
Packet: /mnt/usb/P3X_FW_Vxxx.xxx.xxx.bin
Result: Abort
The firmware on the SD card is identical to or older than the current firmware on the remote controller.
Do you know that with AC FW v1.10 and later DJI removed the ability to easily downgrade? That would mean of course if you have AC FW 1.11 as you noted that you would need to use unofficial and risky (with v1.11) means to downgrade. The unofficial means were much less risky with v1.10. If you have been trying to downgrade your AC by using the normal update process, then seeing the message you see is what should be expected with regards to AC updating.
If you are getting this message while trying to update your RC, then things are a little strange. If you do indeed have RC FW v1.2.6, you know from previous posts in this thread that you need to go to at least 1.3.2
first, and in the past that has always meant using the old legacy USB stick method before proceeding higher via the app only. Since there is no such thing as a downloadable RC .bin file after 1.3.2 / 1.4.1, if you are getting this message while trying to update your RC it could mean the RC simply does not understand the AC only FW .bin file that you are trying to install on the RC. Just a guess on the error message, and also just a guess that you are trying to use AC FW on your RC.
Anybody care to try and figure out why the log says I have the latest FW but the App says I have 1.2.6 on the RC and need an update to connect to the AC?
I'm still getting the "Aircraft Disconnected" message at the top of the App screen. I did manage to link the RC and the AC but still get "Aircraft Disconnected".
Thanks.
The normal RESULTS_AB log shows the results of FW checks on your AC and doesn't show RC versions. I'm assuming that you know the AC and RC versions were the same with early versions back when one file was used to update both. Once DJI switched to updating the RC via the app, the versions diverged and there was no longer a downloadable .bin file for RC updating. As you already know from previous posts in this thread, the AC FW version you have installed requires you to have RC FW 1.6 or later. This is due to an encryption change in April 2016 which you may have seen in
this post linked earlier in the thread. If you do indeed have 1.2.6, then seeing an update required message is what should be expected.
Side note - I'd still like to see your LOG_AB file. I know you said that you already show hidden files, but are you checking an SD card that hasn't been used for a FW check since being last formatted? If so, try the tip at the very bottom of the
LOG_AB post. Specifically this:
The LOG_AB file is written by your AC and will remain on your SD card until you format the card. If you are showing hidden files and still do not see a file named exactly as above, you have likely deleted the LOG_AB file with an SD card formatting. You will need to get your AC to write the file again. What we routinely tell people is to put a very old FW .bin file alone in the root of the SD card. It should be older than your current AC FW so that it is sure to fail when you start up your AC. Your AC will write the LOG_AB file again and you should be able to see it.