Acer Aspire BIOS Recovery Question

zombiell000
zombiell000 Member Posts: 3 New User
edited March 2023 in 2017 Archives

Is the BIOS Recovery system (Fn+Esc) in the Acer Aspire E1 series basically equivalent to external reflashing?

 

So if the BIOS were to be write protected, you could not flash it from inside Windows or not even DOS flasher like Flashit.exe.

 

But it looks like the BIOS Recovery system copies the entire .fd file to the BIOS chip, so basically it ignore the write protected nature of the firmware and copies the file to the chip anyway. It looks like this BIOS Recovery system is an entirely external process independent from the main chip since it can externally rewrite the chip.

 

Is this the case? If so then it looks like it's equivalent to external flashing via a programming device.

 

Can anyone explain it how does this Recovery system work?

 

Basically my question is whether the BIOS Recovery procedure can reflash the BIOS firmware on the chip if that is write protected (you know like enabling the write protected flag in the BIOS config), and does the BIOS Recovery replace/overwrite the .fd file entirely during the flashing process ?

Answers

  • IronFly
    IronFly ACE Posts: 18,413 Trailblazer

    yes it will bypass the write protection and reflash completly the CMOS.

    I'm not an Acer employee.
  • zombiell000
    zombiell000 Member Posts: 3 New User
    IronFly wrote:

    yes it will bypass the write protection and reflash completly the CMOS.

     So that means the entire .fd file get's overwritten correct?

     

    I have observed that if the checksum of the BIOS on the chip is the same as the BIOS being flashed, then it doesn't flash. Or it other words if you try to flash it 2 times with the same file it won't let you the 2nd time. Is that some kind of protocol built in?

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