does ccaa-1C1212 fix open-loop charging Lithium ?

I have a client 6000xp running off-grid and charging LFP with firmware ccaa-191011.... almost correctly, but has a bug which turns off AC-out to loads for 20 seconds or so after hitting vBulk, and sometimes bounces between vFloat and vBulk a couple times before settling to float.

Can anyone verify that ccaa-1c1212 fixes this and does not introduce any other problems ?

secondly.... since this site is off-grid with no AC-in available... the wifi will be powered off if the inverter is in standby mode. Will I be able to do this update for my remote client without going on-site myself to initiate the update and re-start inverter ? I am unclear on how I can do a remote update if their wifi modem is turned off when inverter is in standby and ACout to Loads is turned off.

Does the download of the update occur first, while inverter is running loads ? Does the inverter sequence thru upload and restart without local power for the modem? .... will it work if I do it during the day when PV power is available, or do I need to go out to the site with a dedicated power source for the modem during the update and restart ?