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Bios password removal on a Unowhy dump

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    #21
    Hello Guys,

    I'm still having some troubles to remove a password on a bios chip. I have bought a new T48 (TL866II plus) because my batronix programmer didn't get it well...

    Computer information:
    Unowhy computer (NOT laptop)
    UYM6524702229
    SN: UYM6524702229
    Art: T309475
    I also get a UYM184E70E15

    Click image for larger versionName:	IMG_20231108_183557.jpgViews:	15Size:	206.7 KBID:	3180448
    Click image for larger versionName:	IMG_20231114_205141.jpgViews:	15Size:	1.08 MBID:	3180449
    Click image for larger versionName:	IMG_20231114_205130.jpgViews:	15Size:	1,000.9 KBID:	3180450

    I have unsolder the W25Q256JV chip and get it on the T48, it was well reconnised.

    Click image for larger version  Name:	CM231113-193434002.jpg Views:	15 Size:	213.2 KB ID:	3180451

    As it is a unowhy computer, password seems "hide" in 2 places between “…AMITSESetup” and “.NVRAM…”
    Click image for larger version  Name:	HxD_hcSyPrM4x4.gif Views:	67 Size:	132.8 KB ID:	3180447




    But I can't get it to work... here are my tests....


    1-- If i select W25Q256JV@WSON8 on T48 program, It's reading, i get a dump, with 2 places where the password "should" be stored. Here is the original dump attached W25Q256JV@WSON8.origin.BIN. I have made the modifications, save the new dump (also attached) W25Q256JV@WSON8.mod.BIN.
    I burn the chip but i had burning problem, it seems it does burn properly and i get this error when checking flash
    ERROR! FLASH Address:0x000000 Buf_Val:0x11 IC_Val:0x01
    I tried to solder it... but computer doesn't start at all.... nothing...

    2-- As i have 3 computers, i tryed another chip from a booting computer, and choose W25Q256JV(OTP)@WSON8. The OTP version seems to work, No error on reading or flashing (but it's longer time).
    i get the W25Q256JV(OTP)@WSON8.original.BIN file (attached) and when i try to remove the password parts, I only find ONE place to modify (instead of 2?).
    I then burn it, solder it and computer boot up normally... but password is still there...

    Any ideas?

    Also, when i program the chip, i have an option "OTP Secu R" not activate... does it could help?

    Many thanks for your help!

    Last edited by Vesko356; 01-22-2024, 09:25 AM. Reason: Scaled images

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      #22
      No one can help me this the new test i did?

      Thanks

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