Dell 5420 - First timer, messed it up, need help please.

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  • modd1uk
    New Member
    • Mar 2025
    • 5
    • United Kingdom

    #1

    Dell 5420 - First timer, messed it up, need help please.

    Hi guys

    Its my own fault, I'm just hoping somebody can help and the laptop isn't bricked.

    The BIOS chip is a 25rh256cxiq, I read it using neoprogrammer 2.2.0.10 but like a complete idiot didn't search the chip, it was set to the wrong chip, I read the BIOS, unlocked it, flashed the unlocked file and now the laptop is dead, won't even try to power on, only after I'd flashed it I realised the wrong chip was selected.

    How stuffed am I? Is there a way to flash a generic Dell Latitude 5420 BIOS so I'm not stuck with a dead paper weight?

    I have another identical Dell 5420 here that is also BIOS locked, I don't even want to attempt that one, feel like a complete idiot.

    Using a CH341A and a WSON8 pogo.

    Having read a lot more the 25rh256cxiq isn't supported, but people have had success flashing it as an XM25QH256B chip, I wish I'd have known this before I backed up, erased and flashed a 9mb file

    Any help would be greatly appreciated!
  • DeXXter
    Senior Member
    • Aug 2023
    • 91
    • Chile

    #2
    Have you tried to download another bios from dell? I found a bios for that device on indiafix too, you could try to download and program that.

    Comment

    • lapfix
      Badcaps Legend
      • Mar 2020
      • 2564
      • my workshop

      #3
      Try this one , Post n #5

      https://www.badcaps.net/forum/troubl...ge#post1708760

      Comment

      • mcplslg123
        Badcaps Legend
        • Jun 2015
        • 7262
        • india

        #4
        The bios chip in question is 32MB chip. So how you flashed a 9mb chip?

        Comment

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