Lenovo ThinkPad X1 Yoga firmware set for board LRV3MB, holding the BIOS image for a 16 MB flash chip and the EC image for a 1 MB chip, in a RAR archive of about 8 MB. With both parts included, a technician can address boot failures from a damaged BIOS and power or charging faults caused by corrupt embedded controller code. Write each file only to the chip of matching size using an SPI programmer. ThinkPad dumps may carry serial and security data, so back up originals first.
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 @biosarchive. 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 →