>>20752887 .
In the case of my Ford radio from Shenzen ZYC Car Electronics (zycgotec), knocking on the touchscreen a few times with 5 fingers while the "FORD" logo was displayed (before booting android) actually helped and automatically started the factory reset process.
This solved my problem with getting stuck on the "Android" logo during boot up caused by memory overflow.
Exact radio model:
Shenzen ZYC Car Electronics ZYC-7239 Siliver
ZYC-7In 06FuTe 8227L-A10.0 S

.