: Before making deep changes to the BP1048B2 chip , use a programmer (like an ESP32 or a dedicated IC programmer) to dump the original flash content.
MOVE A, 0x00FF STORE A, [BP+2] CMP B, LIMIT bp1048b2 programming best
Because official documentation has historically been scattered, the best support often comes from the community: : Before making deep changes to the BP1048B2