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Message: <blockquote data-quote="vma" data-source="post: 476917" data-attributes="member: 256592">It's not that hard actually. I have repaired a lot of receivers this way.Most receivers have a standard JTAG connector. If you get one of the standard JTAG interfaces, which are cheap and sold by most internet satellite shops, chances are that you can just plug it into the receiver's JTAG connector.For most receiver's you will already find a preconfigured jkeys.def and pictures showing the right position of the connector.If you don't find the right jkeys.def for your kind of flash memory, but your receiver is built around an ST20 or similar processor, you still have good chances of getting it done.You will need to search the right datasheet for your flash memory and read the section about the memory bank layout. It is this information that you need to enter into jkeys.def.The rest of the proceedure is more or less standard and has been described in many documentes floating in the internet.Finally: one cannot actually break anything with a JTAG-interface, as the problem already is a bad flash on the flash chip! As long as one does not make a short or use the JTAG interface thw wrong way around, the best that can happen is that one deletes all memory banks without being able to restore the contents.By the way: you need a working copy of the bootloader banks! It is not enough to download a firmware or bootloader from the manufacturer, as those files are compressed. You need the actual content of the flash. That's why one should always backup the flash before upgrading the firmware.To read the contents of a flash, no special information about the flash is necessary, as long as the receiver has a ST20 or similar processor.Hope this helps.Cheers,vma</blockquote>

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