Firmware for a CV638H-B Android TV main board, marked as a Nobel brand build for a 4K panel with 4 GB of storage. The rar weighs 378 MB and likely contains a USB upgrade image or an eMMC dump. CV638H boards are universal mainboards, so the customer build, panel resolution and memory size all have to match the set. Check the B revision printed on the board and the eMMC capacity before flashing, and back up the original contents with a programmer so the television can be returned to its previous state if needed.
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 @testedsoftwarefiles. Enginerys does not host this file.
All sources (2)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @testedsoftwarefiles | 4 Nov 2026 | Open file on RM Schematics |
| @tvsoftwareworld | 4 Nov 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 →