If the NAND chip has permanent bad blocks or a shorted data line:
Locate the eMMC or NAND flash memory chip on the printed circuit board (PCB). bootrom error wait for get please check stb uart receive hot
This is the read-only memory containing the very first code the processor runs. If the NAND chip has permanent bad blocks
If your software flash tools fail to communicate because the device is stuck in a loop spinning the "wait for get" error, you must force the processor into . This bypasses the corrupted flash memory entirely. Disconnect all power sources from the STB. This bypasses the corrupted flash memory entirely
If the STB's eMMC or NAND flash memory has been completely wiped, corrupted, or flashed with incompatible firmware, the device cannot load its secondary bootloader (u-boot). When this happens, the CPU falls back completely to its internal BootROM. If the BootROM loop is unstable or locked, the flashing software cannot get the response it needs to push the new bootloader. 3. Power Sequencing Issues