I've got a Reverb AXS 170, recently serviced all working fine. Installed firmware update uploaded fine. Very next day post would drop once, but will not come back up. Its gone to a SRAM authorised service centre who have done everything they can to get it working - mechanically there is nothing apparent wrong. They do not have the ability to get inside at the electronics head side to investigate there. SRAM will not look at it as its out of warranty (by approximately 6 weeks.)
I'm interested to see if anyone else has a problem after installing the latest firmware update that came out in December to support Flight Attendant.
Just to be clear, the SRAM service centre have done everything and gone above and beyond to help me with this. The only people with access to the electronics head and firmware changes (refresh, downgrade etc) are SRAM themselves and they won't help.
(I've also posted this in the SRAM forum as well 👍🏻)