I'm seeing a few possible resolutions on these threads like manual re-linking and getting closer to wireless router, re-installing Assistant 2, etc., etc. In the past things didn't work until 5 or 6 reboots of drone and RC, etc.Perhaps a DJI Admin could chime in here like Natalia or Mindy or someone.
Indeed it’s vital that the CMS System Repository database is updated as part of the update process.You can update from any version of BI4.0 to any Support Pack version on BI4.1 or BI4.2 directly.On the tablet I started DJI GO, and on the splash screen I was advised that the RC needed a firmware upgrade - do I want to? Then I just needed to power cycled both devices, and performed a manual connection (C1 C2 Record).I am experiencing the same issue, only in my case, using DJI GO4, the P4P upgraded fine to 1.2.0604 (?) and then no options for RC via Assistant 2 other than factory defaults, but even that wouldn't work.
I'm seeing an upgrade notification on GO4 when RC is connected but as many times as I tell it to upgrade, nothing happens, so I'm currently stuck with an aircraft that is upgraded, but doesn't do a video link to the RC which is still on an older firmware.I was in my office which is where my router is located and I once again tried the i Phone app again and it worked immediately. I updated the P4P first via Assistant 2, then I powered up my RC with tablet attached.Does not make sense why it worked beside the router, I had good WIFI strength in the other room which is right beside the office, but it worked when my phone was beside the router (WIFI) ..... The RC and P4P wouldn't connect, and the RC LED was rapidly flickering red/green - I assume to confirm that action was required.But first let’s start with how you should update from BI4.0 to BI4.1 The update to BI4.1 (or BI 4.2) from BI4.0 is the same process as applying a Support Pack. just apply the ‘patch’ software to update from BI4.0 to BI4.1.There is no need to install BI4.1 on a new machine, nor is there a need to move, or copy content from one repository to another.This is in addition to BI4 repositories becoming corrupt and all the pain of sorting that out.