So, motivated by my TiTS10 arrival, I finally upgraded to TK’s latest (rev. 812 at least until a few minutes ago, multichannel seems to be changing in an hectic pace).
For those wanting to flash it but not willing or able to compile it themselves, here are the hexes: https://durval.com/xfer-only/toykeeper_-_flashlight-firmware_-_multi-channel_-_rev_812_-_00ALL_HEXES_THAT_BUILD.zip
Caveat emptor, use at your own risk, your mileage may vary, etc – but if anyone uses it successfully or not, please let me know.
I also did a version with my 8C-Quick_Aux_Swap mod built in, just posted it on the other thread: Anduril 2 feature change suggestions - #542 by dmenezes