Toshiba A205-S7468 Recovery After Bad Flash

Discussion in 'BIOS Mods' started by bluecatfish, Feb 11, 2013.

  1. bluecatfish

    bluecatfish MDL Junior Member

    Apr 8, 2009
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  2. LatinMcG

    LatinMcG Bios Borker

    Feb 27, 2011
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    what programmer hardware did u use?
     
  3. bluecatfish

    bluecatfish MDL Junior Member

    Apr 8, 2009
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    i used my en25t80 programmer with usb spi tinytool.exe software.
     
  4. LatinMcG

    LatinMcG Bios Borker

    Feb 27, 2011
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    did u make a backup at 4k sectors and the right size ?

    strange that it made different reads. programmer or bios chip issue.. try new read and write comparison.
    tested your ram in your pc ? seen this to be a fault before.
     
  5. bluecatfish

    bluecatfish MDL Junior Member

    Apr 8, 2009
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    @LatinMcG
    it is the same software as i am using. same computer, programmer and software that i successfully programmed and recovered my HP DV5-1183CL, so i don't think it is a ram problem. i set the programmer on 4k to flash and read. the bios.rom file size is 1.02mb. should i set the read length to 1M or 2M? do i need to use a different setting or is there another setting i need to make? i have the chip off the mb and i thought there might be a problem with the chip holder so i have made a new one and it made no difference.
     
  6. LatinMcG

    LatinMcG Bios Borker

    Feb 27, 2011
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    likely 2 mb not 1

    im not sure if it needs it at 4k or 32 or 64.

    the programmer i preffer is the ezp2010 i found it easy no problems but its $35 so i got same as u with ATMega8L chip
     
  7. bluecatfish

    bluecatfish MDL Junior Member

    Apr 8, 2009
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    checked out the ezp2010 on ebay. would like to have one, but can't justify it just to occasionally program a chip. will just keep trying to make it work. thanks for you advice.
     
  8. LatinMcG

    LatinMcG Bios Borker

    Feb 27, 2011
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  9. bluecatfish

    bluecatfish MDL Junior Member

    Apr 8, 2009
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    still trying to flash the bios. a205fixed.bin does the same as the other files. after writing and comparing the bios chip does not match the file wrote. will keep trying to sort it out. thanks for your help.
     
  10. LatinMcG

    LatinMcG Bios Borker

    Feb 27, 2011
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    i wrote it and compared and showed line 0001000 has error. strange.. still try it or try the crisdisk or wincris for toshiba recovery method again
     
  11. bluecatfish

    bluecatfish MDL Junior Member

    Apr 8, 2009
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    after many tries was able to write bios file to chip, backed up and compared files in hex editor, they were the same. soldered on mb, assembled laptop, powered on and all led's on but no video. tried the wincrisis recovery, no go. i believe the onboard video chip solder is the problem again. reflowed it once before. time for a new mb or the junk pile. thanks for all your help LatinMcG.