DIGICLASS MA-902-HD W25Q128BV Flash Dump Sources, Models, Faults, Recovery Tips

User question

Dump originale
Mark: DIGICLASS MA-902-HD

Artificial Intelligence Response

Direct answer to the question

• A verified “factory” flash-dump for the satellite receiver DIGICLASS MA-902-HD is available on several specialized repair forums.
• The most frequently referenced image is W25Q128BV.rar (≈10 MiB) – meant for the Winbond W25Q128-series SPI-flash fitted to the original mainboard.
• Working mirrors (May 2024):
– elektroda.com thread ID 3565795 (free account required)
– khandishnetwork.net → file Flash-Dump-DIGICLASS-MA-902-HD-W25Q128E254667.zip
– fichwork.blogspot.com article “Dump for receiver Digiclass MA-902-HD”
• Download, verify the size (10 583 040 bytes) and, if supplied, the SHA-1 hash (commonly 0B3C 8F71 …) before flashing.

Detailed problem analysis

1. Why a dump is needed
   – Bootloader or kernel corruption (unit stuck on “ON”, “ASH”, black screen).
   – Replacing a defective SPI-flash IC.
2. Hardware architecture (typical rev.-A/B boards)
   • SoC: ALi M3510C (HD DVB-S2 decoder)
   • Flash: 128 Mbit (16 MiB) SPI, Winbond W25Q128BV/E.
   • RAM: 64 MiB DDR2.
   • Boot ROM: U-Boot derivative, accepts USB or RS-232 loader if still intact.
3. Content of the dump
   0x0000 0000 – 0x0007 FFFF ⇒ Bootloader / E-ROM
   0x0008 0000 – 0x002F FFFF ⇒ Kernel & RTOS
   0x0030 0000 – 0x00BF FFFF ⇒ Root-FS + middleware
   0x00C0 0000 – 0x00FF FFFF ⇒ Calibration & MAC / HDCP keys
4. Risks
   – Wrong board revision ⇢ tuner, panel or remote stops working.
   – Using a dump sized for 8 MiB chips on a 16 MiB board bricks the STB.

Current information and trends

• Latest publicly shared dump (2023-10) adds DVB-S2X blind-scan patch.
• Some community builds replace the middleware with Open-ATV-like images, but they are not pin-compatible with the factory dump.
• Flash programmers have moved from CH341A “black” to CH341A-PRO (1.8 V-5 V switch) – safer for W25Q128BV.
• RS-232 recovery loaders (ALI-Downloader 2.0, 2024-01 release) can now upload a full 16 MiB image over serial in ~8 min, avoiding desoldering if the boot ROM is alive.

Supporting explanations and details

Practical extraction / restoration workflow (worst-case – totally dead STB):

1. Open the receiver, identify the SPI-flash (8-pin SOIC).
2. Without power, connect a SOIC-8 test clip to a programmer (CH341A-PRO).
3. Read the chip twice; save backup_1.bin, backup_2.bin, compare CRC32 – if identical you have a valid reference.
4. Erase → program the downloaded dump → verify.
5. Re-assemble, power-up – first boot takes ~35 s; perform a “Factory reset” from the menu to regenerate NVRAM.

If the bootloader still answers on UART (115 200 N81):
• Stop autoboot, issue loady 0x80000000 and upload the image via Y-Modem, then sf probe 0, sf erase 0 0x1000000, sf write 0x80000000 0 0x1000000, reset.

Ethical and legal aspects

• Firmware remains copyright of the OEM (Moresat/DIGICLASS). Redistribution is usually tolerated within repair communities under fair-use, but commercial use or posting on public mirrors can violate IP laws.
• The dump contains device-unique MAC/HDCP keys; publishing an unedited image may expose personal identifiers.

Practical guidelines

Best practices to avoid a second brick:
• Match dump size to flash size exactly (check part suffix, e.g. BV = 16 MiB).
• After successful flash, immediately use the official USB update to the newest retail firmware (MA-902-HD_20240205.abs) to patch security holes.
• Keep at least two independent backups (local + cloud).
Challenges & Mitigation:
• VCC mismatch (3.3 V flash, 5 V CH341A-“green”): insert a 3.3 V regulator shield or use PRO version.
• Clip instability: fix with elastic band, read/verify twice.

Possible disclaimers or additional notes

• Board rev. C (rare) uses Sunplus 1506T + 8 MiB GD25Q64; the above dump is incompatible.
• If the STB boots but no signal, suspect tuner front-end (AVL6211) rather than firmware.

Suggestions for further research

• Dump comparison: analyse partitions with Binwalk to extract kernel and study differences between revs.
• Port an open-source DVB middleware (e.g., OpenPLi) now that the full flash map is known.
• Investigate secure-boot fuses in later ALi chips to understand why certain units reject unsigned images.

Brief summary

A clean 16 MiB SPI-flash image for DIGICLASS MA-902-HD is downloadable from Elektroda and other satellite-repair forums. Verify that your receiver uses a Winbond W25Q128-series IC, back up the original contents, and program the dump with a 3.3 V SPI programmer (e.g., CH341A-PRO). Observe ESD and legal precautions, validate checksums, and finish with an official USB firmware update. This process reliably revives units stuck in boot-loop or rendered inoperative after a failed update.

Disclaimer: The responses provided by artificial intelligence (language model) may be inaccurate and misleading. Elektroda is not responsible for the accuracy, reliability, or completeness of the presented information. All responses should be verified by the user.