Expand description
Factory service mode commands for calibration, testing, and diagnostics.
§Safety
These commands are intended for factory use only. Incorrect use can:
- Corrupt factory calibration (0R, 1A-1W) — may require professional recalibration
- Brick the radio (1F) — raw flash write can overwrite boot code
- Change the serial number (1I) — may void warranty
Service mode is entered by sending 0G KENWOOD and exited with bare 0G.
While in service mode, the standard CAT command table is replaced with the
service mode table — normal commands will not work until service mode is exited.
All 20 service mode commands were discovered via Ghidra decompilation of the TH-D75 V1.03 firmware. The service mode table is at address 0xC006F288 with 34 entries (20 service + 14 remapped standard commands).