What is it? Gigaset-Debug-Adapter can be used with many Gigaset DECT phone models to access the internal UART. It’s basically a 1.8V USB->UART converter, with switchable strapping logic and 3V step-down converter. The device fits into the battery tray and mechanically emulates 2 AAA batteries. The dialog-cr16c-uart-boot bootloader can be used to upload a stub to the phone through the boot ROM and access the SPI NOR flash chip.
