Samsung Update BIOS No Battery NP300E5C

Discussion in 'Samsung' started by plarfman, May 24, 2020.

  1. plarfman

    plarfman Notebook Enthusiast

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    Hey everyone, i have a samsung np300e5c-a05uk, it suffered the "uefi brick" BUT i installed windows to go on an external hdd and doing f9 boots into it, so i go and use BiosUpdate.exe, it said i currently had p05rac and i can update to p07rac i went on to update but it says theres no battery or the power is lower than 30%, i dont have a battery anymore, so i tried winflash by flashing a modified bios p07rac, it lagged wen flashing then when i reboot it started boot looping, however i can still boot into windows which is in my external hdd, any help would be appriceated.

    Thanks
     
  2. moral hazard

    moral hazard Notebook Nobel Laureate

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    Looks like it's maybe an AMI bios, I'd look into flashing via the intel FPT tool you can find on forums.

    One example is here:
    https://www.tonymacx86.com/threads/how-to-downgrade-your-bios-firmware-using-fpt-freedos.239592/

    I think there is a chance FPT may not care if you have a battery or not.

    Before you flash anything with FPT, make sure you take a dump of the current bios via FPT as a backup. Read up on bios recovery via spi and flashrom here just in case it goes wrong:
    https://www.win-raid.com/t796f16-Guide-Using-CH-A-based-programmer-to-flash-SPI-EEPROM-5.html
     
  3. plarfman

    plarfman Notebook Enthusiast

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    Its a phoenix bios
     
  4. moral hazard

    moral hazard Notebook Nobel Laureate

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    It's an Intel tool, unsure if compatible with Phoenix bios but worth a try. See if the tool can dump the current bios.
     
  5. plarfman

    plarfman Notebook Enthusiast

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    How about trying to update the bios in winpe? Could it work?
     
  6. Dannemand

    Dannemand Decidedly Moderate Super Moderator

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    Please see my reply in the UEFI unbricking thread where you also posted.

    http://forum.notebookreview.com/thr...3ca-my-last-hope.762595/page-23#post-11016972

    We don't allow (and don't like) cross posting on NBR, but you have two problems: One is solving the NVRAM corruption. The other is updating your BIOS when you have no battery.

    Yes, if you manage to update the BIOS, it will also clear NVRAM, but you can also clear it without updating, as described in the other thread.

    Just keep this thread on the issue of updating the BIOS.

    More advice on force flashing the BIOS can be found in the BIOS rollback thread:

    http://forum.notebookreview.com/threads/samsung-laptops-roll-back-bios-updates.696197/#post8940344
     
    TANWare likes this.
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