After my park outing, I returned to find an update to R1CBU 0.29.2. It includes fixes for: SWR Scan that leaves the radio in AM mode CAT control of modes r1cbu x6100 xiegu See also ATU Bug in R1CBU 2.29.2 POTA US-1356 Gifford Pinchot X6100 Crashing X6100 Firmware Again Failed Upgrade for X6100