I replaced the motherboard, motors and camera on my Phantom 3 Pro after a crash.
Now it won't start up properly....
It just keeps on beeping.
I have tried updating firmware but the end result is the same, constant beeping.

When I start the update it all looks OK, the led in the front of the camera alternates between red and green.
After a while the beeping changes slightly and the camera led turns to constant red  :-(

This is what the update log says:

Result: Success.

========== 2014.01.01 00:00:12 remo-con disconnect======
Packet: P3X_FW_V01.03.0020.bin
Upgrading ...
Result: Success.

========== 2014.01.01 00:00:13 remo-con disconnect======
Packet: P3X_FW_V01.04.0010.bin
Upgrading ...
Result: Success.

========== 2014.01.01 00:00:13 remo-con disconnect======
Packet: P3X_FW_V01.04.0010.bin
Result: Abort.
The firmware on the SD card is identical to or older than the current firmware on the aircraft.

========== 2014.01.01 00:00:12 remo-con disconnect======
Packet: P3X_FW_V01.05.0030.bin
Upgrading ...
Result: Success.

========== 2014.01.01 00:00:12 remo-con disconnect======
Packet: P3X_FW_V01.06.0040.bin
Upgrading ...
Result: Success.

========== 2014.01.01 00:00:13 remo-con disconnect======
Packet: P3X_FW_V01.06.0040.bin
Upgrading ...
Result: Success.

========== 2014.01.01 00:00:13 remo-con disconnect======
Packet: P3X_FW_V01.06.0040.bin
Result: Abort.
The firmware on the SD card is identical to or older than the current firmware on the aircraft.

========== 2014.01.01 00:00:12 remo-con disconnect======
Packet: P3X_FW_V01.07.0060.bin
Upgrading ...
Result: Success.

========== 2014.01.01 00:00:13 remo-con disconnect======
Packet: P3X_FW_V01.08.0080.bin
Upgrading ...
Result: Success.

========== 2014.01.01 00:00:15 remo-con disconnect======
Packet: P3X_FW_V01.09.0060.bin
Upgrading ...
Result: Success.

========== 2014.01.01 00:00:13 remo-con disconnect======
Packet: P3X_FW_V01.09.0060.bin
Upgrading ...
Result: Success.

========== 2017.06.17 11:22:51 =====================
Packet: P3X_FW_V01.10.0090.bin
Upgrading ...

========== 2014.01.01 00:00:17 remo-con disconnect======
Packet: P3X_FW_V01.10.0090.bin

========== 2014.01.01 00:00:12 remo-con disconnect======
Packet: P3X_FW_V01.10.0090.bin
Upgrading ...

========== 2014.01.01 00:00:12 remo-con disconnect======
Packet: P3X_FW_V01.10.0090.bin

========== 2014.01.01 00:00:12 remo-con disconnect======
Packet: P3X_FW_V01.10.0090.bin

========== 2014.01.01 00:00:12 remo-con disconnect======
Packet: P3X_FW_V01.10.0090.bin

========== 2017.06.17 16:05:20 =====================
Packet: P3X_FW_V01.10.0090.bin

========== 2014.01.01 00:00:12 remo-con disconnect======
Packet: P3X_FW_V01.10.0090.bin
Upgrading ...

========== 2014.01.01 00:00:13 remo-con disconnect======
Packet: P3X_FW_V01.10.0090.bin
Upgrading ...
Result: Success.

========== 2014.01.01 00:00:12 remo-con disconnect======
Packet: P3X_FW_V01.11.0020.bin
Upgrading ...
Result: Success.

========== 2014.01.01 00:00:12 remo-con disconnect======
Packet: P3X_FW_V01.11.0020.bin
Result: Abort.
The firmware on the SD card is identical to or older than the current firmware on the aircraft.

========== 2023.07.23 23:05:05 =====================
Packet: P3X_FW_V01.11.0020.bin
Result: Failed.
Reboot the aircraft and try to upgrade the firmware again.

========== 2014.01.01 00:00:13 remo-con disconnect======
Packet: P3X_FW_V01.11.0020.bin
Result: Failed.
Reboot the aircraft and try to upgrade the firmware again.

========== 2014.01.01 00:00:13 remo-con disconnect======
Packet: P3X_FW_V01.11.0020.bin
Result: Failed.
Reboot the aircraft and try to upgrade the firmware again.


I have rebooted the drone and tried a few times, but it ends in the same way :-|
What is wrong and how can it be fixed?

Hello, there. We apologize for any inconvenience caused. Phantom 3 Pro has been suspended for services since January 5, 2023.
As of the date of service suspension, we will no longer provide you with services for these products involving product inquiries, technical support, and product maintenance. We apologize for any inconvenience this may cause.
  
If you are still using any of the above products, we sincerely recommend that you upgrade to an alternative product of a new model so that you can enjoy our more recent, improved technologies, and we can then continue to provide you with efficient customer service.

For more information, here is the link: https://forum.dji.com/forum.php?mod=viewthread&tid=270360