Firmware and dumps guide

Everything about getting data out of a TV and checking it: firmware packages, eMMC and SPI dumps, hashes and replacement chips.

These guides cover the practical side of firmware work for TV technicians, from reading a chip to confirming that your copy is intact. Each article ends with how the task is done in FW Tool. Whether you are reading a chip for the first time or choosing a substitute for a failing one, the articles keep to the same pattern: the symptoms, a step-by-step method, the usual mistakes, and the matching function in the program. Each page is written to be read on its own, so you can jump straight to the task you have today. Together they take you from a first look at the board to a verified result, and each one links to the matching function of the program for readers who want to try it on their own bench.

• TV eMMC dump: how to read, verify and what to do next
  Working with a TV eMMC dump: connection, copy, hash check, partition analysis, what to avoid.
• SPI flash 25xx (SOIC8): pinout and programming mistakes
  Standard 25xx pinout, 3.3 V and 1.8 V chips, in-circuit and off-board reading.
• How a TV USB firmware package is built
  What is inside a TV USB firmware file: container, scripts, partition images, compression and encryption, and how to take it apart safely.
• Comparing two eMMC/SPI dumps: hashes and differences
  How to verify a TV dump with CRC32/MD5 and a byte-by-byte comparison, and how to read the list of differing ranges.
• Choosing a replacement eMMC for a TV
  How to pick an eMMC substitute: capacity, package, version, manufacturer, and what to do after the swap.

Where to start

Begin with reading an eMMC dump or the SPI flash pinout, then verify with hashes and comparison. Next, learn how a USB firmware package is built, and finish with choosing a replacement eMMC.