I have plans to make a custom firmware for Convoy’s 5A dual-fuel driver, which is boost for AA and buck for 14500.
Unfortunately, most Convoy drivers aren’t easy to flash – they either have no flashing pads (and use tiny parts) or/and have extra components on the programming pin that need to be desoldered. The 8x7135 and 5A dual-fuel are among the few exceptions that are easy to flash. You can check my research on Convoy drivers in the SN8Flash thread.