Haven’t seen it elsewhere on ST and there are a few applicable threads, but I’ll go with this one. SRAM released a firmware upgrade for AXS Red and Force shifters and the AXS Blipbox that make them, compatible with eTap 11 speed derailleurs! https://support.sram.com/...nd-rear-derailleurs-[/url]

This should provide support for all those with eTap TT installs and bad blipboxes. This assumes your derailleurs are working though i believe there is an 11s A2 model RD offered when available. 11s FD appears to be the only weak link.

More info on compatibility here: https://support.sram.com/...-speed-with-eTap-AXS[/url]

Might be worth a follow up with SRAM from Slowman.

eta:typo fix