Notice to users of XGecu TL866II Plus / T48 / T56 / T76 programmers regarding BIOS backup file size

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  • m1ch43lzm
    Badcaps Veteran
    • Mar 2019
    • 546
    • Peru
    #1

    Notice to users of XGecu TL866II Plus / T48 / T56 / T76 programmers regarding BIOS backup file size

    Hi everyone
    I noticed on the Xgpro software the BIOS backup files have extra bytes at the end when reading some chips, this is because the Xgpro software also reads the OTP region of those flash chips, and by default will append that region to the saved file
    Programmer models: XGecu TL866II Plus / T48 / T56 / T76

    Example: GD25LQ128D (1.8V), IC size is listed as 0x1000000 Bytes (16777216 bytes) + 0xC00 bytes, those extra 0xC00 bytes will be appended to the end of the saved file by default, resulting in a file size of 16780288 bytes
    There's also an extra OTP Secu.R tab in the main window

    Click image for larger version Name: xgpro gd25lq128d otp.png Views: 0 Size: 64.2 KB ID: 3719949

    Solution: Make sure you check the FLASH radio button on the Save dialog, under "Select buffer", that way only the FLASH region will be saved (which is the region we're interested in), and the backup will have the proper file size
    You have to change this option every time you press the Save button, as it resets to DEFAULT every time

    Click image for larger version Name: xgpro save as.png Views: 0 Size: 14.7 KB ID: 3719948

    For 64 Mbit (8MB) chips, the file size should be exactly 8388608 bytes
    For 128 Mbit (16MB) chips, the file size should be exactly 16777216 bytes
    For 256 Mbit (32MB) chips, the file size should be exactly 33554432 bytes
    For 512 Mbit (64MB) chips, the file size should be exactly 67108864 bytes

    If you already have a saved file of the "wrong" size, those extra bytes at the end can be safely trimmed with a hex editor, keeping in mind the correct file size of course
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