The "Bootrom error wait for get please check stb uart receive full" is a fatal initialization error. It rarely resolves itself with a simple reboot. It usually requires a JTAG or UART firmware re-flash. For end-users, this typically means the device is dead (bricked) and requires warranty replacement. For technicians, it is a signal to check the serial connections and flash memory integrity.
A fluctuation in voltage during the data transfer can cause the CPU to drop the connection. This often happens if the device is powered by a laptop USB port rather than a dedicated wall adapter. The "Bootrom error wait for get please check
The error indicates the BootROM (mask ROM code on SoC) attempted to receive a boot image or handshake token via UART but failed due to one of the following: The UART communication speed (baud rate) must match
The UART communication speed (baud rate) must match between the device and the sender (PC). If the PC is sending data at 115200 baud but the BootROM expects 9600 (or vice versa), the data will be garbled, causing the receiver to stall. the data will be garbled
If a firmware update was interrupted (power loss) or the wrong firmware was flashed, the bootloader environment may be destroyed. The device tries to enter "Rescue Mode" via UART but fails due to corrupted instruction sets.