: Never power off the STB during the upgrade process, as this can permanently damage the hardware.
: If using a USB adapter, ensure the CH340 drivers are correctly installed so the tool can see the COM port. Download Resources stb upgrade tool ver 40 2 link
This tool acts as a communication bridge between a PC and your receiver. : Never power off the STB during the
Select the correct (check Device Manager to find the assigned number). Set the Bits Rate to 115200 and Parity to Even. stb upgrade tool ver 40 2 link
: Ensure the firmware matches your exact STB model. Flashing the wrong software can lead to a "boot loop" or a completely unresponsive box.