Czy wolisz polską wersję strony elektroda?
Nie, dziękuję Przekieruj mnie tamfirmeware combi tv led grandin cb19chaob
BPA920A4LA001396
Key points
• Firmware is model-, chassis- and sometimes panel-specific.
• Public “generic” dumps found in forums often brick the TV.
• Contact Grandin support (support-multimedia@itmdistrib.com, +33 (0)8 92 68 09 70) or an authorised repair shop and give them: CB19CHAOB, main-board code (e.g. 17MB82S), panel code and the fault symptom.
Why the firmware is hard to find
• Grandin is a private label. The electronics are manufactured by Vestel (Turkey) or occasionally MStar-based OEMs.
• Vestel releases software only to licensed partners via the Vestel Service Portal; Grandin does not mirror those files publicly.
• Each binary contains EDID tables for the exact LCD panel (e.g. VES190WNV-01). Using the wrong binary can result in inverted, blank or colour-shifted images or an unbootable board.
Typical failure scenario
Symptom: TV powers on, shows “Initialisation en cours” indefinitely or loops. Cause hierarchy:
a) Corrupt NAND/SPI flash file system (most common).
b) Bad eMMC (in newer boards).
c) Power-supply ripple causing brown-out resets (check PSU electrolytics before reflashing).
Hardware identification procedure
Firmware acquisition paths
• Grandin/Intermarché support: provide board + panel codes; they e-mail the .bin package (usually 60-100 MB ZIP).
• Vestel service partner: any TV repairer with Vestel credentials can download the exact build (e.g. 17MB82S_30124537_190WNV.bin).
• Trusted repair forums (Elektroda.pl, Remont-aud.net) only if you match board & panel; verify checksums.
Flashing methods
A. USB auto-update (bootloader intact)
• FAT32 ≤ 8 GB stick → copy unzipped files (mbxx_en.bin + manifest).
• Hold “OK” on remote, insert mains. LED blinks fast → wait 3-5 min, TV reboots.
B. ISP programmer (bootloader corrupt)
• CH341A + SOIC-8 clip on Winbond W25Q32 (or desolder).
• Save original dump, erase, program new .bin, verify.
Safety checkpoints
• Stable 230 VAC or use an isolation transformer + UPS.
• Do not mix panel revisions.
• Keep a copy of the original SPI dump in case white-balance or NVM data must be restored.
• Since 2022 Vestel shifted from SPI-NOR to eMMC for mid-size boards; future binaries are encrypted and tied to board ID.
• EU Right-to-Repair legislation is pushing OEMs to publish more service data; Grandin may release consumer-grade updates in the coming years.
• Technicians increasingly use “USB MasUpdate” sticks supplied by Vestel that auto-detect chassis and write the correct build.
• The serial “BPA920A4LA001396” is an internal production code; firmware matching is done by chassis and panel strings, not by that serial.
• Grandin CB19CHAOB (19 ") usually uses a 12 V/4 A external PSU feeding a Vestel 17MB82S board; the SPI flash is 32 Mbit.
Analogies: loading the wrong firmware is like flashing a diesel ECU image into a petrol engine—hardware starts but cannot run.
• Distributing copyrighted binaries without vendor permission may violate EU intellectual-property law.
• Flashing safety-critical software (back-light control, PSU PFC) carries fire-hazard risks if parameters are wrong.
Implementation summary
Challenges & mitigation
• No access to service portal → partner with a local TV shop.
• TV bricks after wrong file → have programmer ready to restore original dump.
• If the standby LED is completely off, the issue is 99 % hardware (PSU or mainboard VRM), not firmware—flashing will not revive it.
• Some forum dumps are region-locked (DVB-T2 vs. ISDB-T). Ensure you take the EU build.
• Monitor EU “Digital Product Passport” initiative—may require small brands to supply firmware publicly.
• Investigate open-source Vestel reverse-engineering projects (libvestel-pvr) for service-menu scripting.
• Consider swapping the Vestel board with a universal V56 or VS.TP53 if repair economics don’t justify original parts.
The firmware for the Grandin CB19CHAOB is not openly published. Because Grandin uses Vestel chassis, the only reliable path is to obtain the exact USB update or SPI dump from Grandin/Intermarché support or an authorised Vestel service partner, giving them the main-board and panel identifiers. Attempting to flash with mismatched or unofficial files risks irreparable damage. Begin by confirming that the fault is truly firmware-related, then follow the safe USB-update or ISP-programming procedures outlined above.
