Release notes said RC did not need updated.
Even though the DJI docs says RC is not required, there might be a possibility that some users are still on 1.1.8 or 1.1.9 on both bird and RC.
The latest firmware 1.4 requires the RC to have 1.3.2 firmware.
Do a 2 stage update - 1.3.2 for bird and remote and batteries.
And then 1.4 for the bird only.
Also try using the mem card that came with the P3. Format in Fat32. if that fails, try exFAT. FAT32 should be most compatible.