We finally have the first fully assembled LinHT Rev B PCB.
The board powers up correctly, the ATTiny power-management firmware is working, and the PMU logic now controls the startup/shutdown sequence as intended.
USB-C charging is also working as expected, and the whole device can be powered on with the rotary ON/OFF switch.
We also confirmed debug UART from the SoM is available on the Kenwood connector and works with common Baofeng-style USB serial adapters.
There is still a lot of work ahead: update the Linux device tree for the new Rev B pinout, validate all new peripherals, and fully test GNSS, the RF power amplifier stage, and the rest of the hardware.
Stay tuned.