How to upgrade UEFI bios without battery in Acer laptop?
Just got thorugh this "upgrade bios without battery" hell on my Acer E11.
The following worked for me:
- Download the BIOS update from Acer site (ZHK116.EXE)
- Run the downloaded file, you will get an error like "No battery" or "Low battery", stay on the error dialogue (!)
- Navigate to your current users temp directory
%userprofile%\AppData\Local\Temp
, there should be somewhere a temporary directory containing the extracted files from the EXE file (for me it was 7zS4A88.tmp) - Save the contents of that temp directory somewhere (you can then close the error dialogue, the temp files will be removed)
- Open the file platform.ini with a text editor and search for the key "AC_Adapter"
- Change parameter BatteryCheck from 1 to 0 or just leave it empty (this disables battery check during BIOS update preparation!), save the file
- Run InsydeFlash.exe in the same directory
- That's it, bios update should start now
Some additional notes:
- Extracting the ZHK116.EXE manually via 7zip did not work because BIOS flash file isflash.bin (ROM file) not packed, but concatenated to the end of ZHK116.EXE file
- Opening the ZHK116.EXE with 7zip and modifying the plattform.ini file out of 7zip did not work either, you cannot save the file
- Updating BIOS via a bootable USB device having a FreeDOS on it did not work getting the same "battery" error (seems that the check is also done in DOS)
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Cloud
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Updated on September 18, 2022Comments
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Cloud over 1 year
My laptop is
Acer Aspire V5-473PG
and I usedwindows 10 Pro 64-bit
. And my battery is already dead around 1 year. Now, when I turn on my laptop, it always shows something like this :Boot media is missing, Please insert bootable media...
.But, I can boot with legacy boot mode, not UEFI. So, I think my UEFI firmware has some problem and I want to upgrade my UEFI. So, I download correct BIOS for my laptop from acer website and it contains only one executable file. When I run that file to upgrade BIOS, it shows
Please insert system battery
and I can't upgrade.I already search many ways on internet, but not working. So, please anyone help me how can I upgrade my bios without battery.
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vembutech almost 8 yearsRun the bios exe via CMD and add /forceit in the end.
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Cloud almost 8 yearsI already tried as you said via CMD and also try from cmd from bootable DVD drive. But its not work. Its ask to insert system battery.
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vembutech almost 8 yearsDid you add that command in the end. /forceit
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Cloud almost 8 yearsyes, I did like this.
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Cloud almost 8 years@vembutech Please help me if you have other options.
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James over 3 yearsFor some reson after I run InsydeFlash64.exe tool it overwrites changes I've made in platforms.ini back to defaults. :(
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Community about 2 yearsAs it’s currently written, your answer is unclear. Please edit to add additional details that will help others understand how this addresses the question asked. You can find more information on how to write good answers in the help center.