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Acer V3-571G Uefi Bios 2.xx downgrade to 1.xx
#31
(07-12-2014, 05:14 PM)BDMaster Wrote:
(07-12-2014, 01:58 AM)TolstyLuty Wrote: "Recovery Procedure :

Extract from Original Bios v1.13 (use 7Zip or WinRar) and rename as Recovery Name Q5WV1X64.fd then prepare an
USB Fat32 Formatted Stick and copy into that file and use this Procedure : "

Так вы не сделаете даунгрейд с 2.XX до 1.XX
Читаем внимательно (переводим) мои посты на acerfans.ru. Я объяснял что надо сделать с файлами и как восстановить в CRM

PS
Я первый сделал даунгрейд с 2.XX до 1.XX

Hi friend,
interesting your discovery, but russian It's not easy for me I have translate in english !
If I understand You have changed chunk hex data into Bios to downgrade from 2.xx to 1.xx and modified chunk hex data to downgrade from 2.xx to 2.04 version.
Can You explain better in english, please !
You're great and brave as is very Dangerous to do this without an SPI PGM.
I wil wait your reply
Regards

I have wrote a lot of time ago this Dirty Guide about Remove Capsule (Decapsulate Bios) to get Recovery File and I found It works
so was possible to use Recovery Procedure on new bioses Signed and Capsulated !

http://rghost.net/52544682

Recovery Bios doesn't matter which Bios version You have into Eeprom, ideed It load new one there is into USB (do all check about name
etc.) and flash into Eeprom directly, so It's the only way (2nd is Intel FPT tool) to Upgrade or Downgrade Bios Version.
Donovan6k was trying to patch InsydeFlash dll to avoid all check and use the InsydeFlash tool to reflash Eeprom, but was out of luck !
My be this can explain better what I said and You can reply easiest to me !
Regards

hi there

I just want to make sure that I understand this correctly, so currently I have bios 2.21 and I want to downgrade to 1.13 so all I got to do is extract the .fd file and put it on fat32 usb then use follow the recovery procedure that's it and it is gonna downgrade successfully from 2.21 to 1.13 because you guys are talking about capsulated and stuff, from that I sense like downgrade won't work from 2.xx version due to encapsulation or I shouldn't worry about any and everything is gonna be fine.
if it won't work, can you please provide me with the modded .fd file that is gonna work for v1.13

thank you.
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