Firmware set for the Xiaomi Redmi 3, packed as a 2.09 MB RAR archive and tagged 88509-1-52 in the name. A sibling file carries 88509-1-27, so the trailing number appears to separate different versions or variants of the same package; confirm which one fits your unit before use. Technicians use this kind of dump to revive a phone that will not boot or to replace corrupted system partitions. Unpack it first, check the contents against the device, and save the existing data and calibration areas beforehand.
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 @SMART_PHONE_SCHEMATICS. Enginerys does not host this file.
All sources (7)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @SMART_PHONE_SCHEMATICS | 29 Nov 2021 | Open file on RM Schematics |
| @pepeelectronica | 21 Apr 2022 | Open file on RM Schematics |
| @pepeelectronica | 28 Apr 2022 | Open file on RM Schematics |
| @GENERAL_SMART_PHONE_SCHEMATICS | 11 Nov 2024 | Open file on RM Schematics |
| @schematics_bios | 31 Jul 2026 | Open file on RM Schematics |
| @cyberlanelectonik | 2 Aug 2026 | Open file on RM Schematics |
| @schematics_bios | 3 Aug 2026 | Open file on RM Schematics |
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 →