Firmware dump for the Lenovo Tablet 10, machine type 20L3, tagged with BM5720 and version 1.2. The file name does not say whether BM5720 is the board code or a firmware identifier. The RAR is 4.55 MB and is intended for repairing tablets stuck at boot or with damaged firmware by reprogramming the SPI flash directly. On compact tablet boards the chip may need a test clip or removal for reliable reading. Back up the original contents before writing anything, and confirm the machine type and board markings match.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @afsbiosfree. Enginerys does not host this file.
How to open a .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →