Firmware dump for the Tenda AC6 wireless router, hardware version V5, packed in a RAR archive of 1.48 MB. The 4MB in the name points to a 4 MB SPI flash image, the usual way to recover a bricked router whose bootloader or web firmware is corrupt. Extract the image and write it with a programmer such as a CH341A after reading and saving the original chip contents. Make sure the router label says V5 and that the flash capacity on your board is 4 MB, because a mismatched image will not fit or boot.
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 →