Wait for the progress bar to reach 100%. during this phase, as it will "brick" the motherboard.

: Once the software confirms a successful flash, restart the device. The receiver should now boot past the logo screen. 3. Safety Precautions

: Remove the 8-pin flash chip (Winbond or similar) from the MB3502A board and place it in the programmer.

: Programs like STB Erom Upgrade or the software bundled with your CH341A programmer. 2. Step-by-Step Installation Guide

: If possible, use your programmer to "Read" and save the current (even if broken) firmware before overwriting it.

: Typically labeled as DUMP_CHEROKEE_20HD_MB3502A.rar . You must extract this using a tool like WinRAR to get the .bin file.

Since this is a motherboard-level file (MB3502A), you cannot usually install it via a standard USB menu. You will need: