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Can't flash back Lenovo G580 [SOLVED]

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Hi all,

I have a straight forward problem here. I am servicing an old laptop for a friend of mine. It's a Lenovo G580. Laptop came with Pentium B820 and I replaced the CPU with i5-3210m and put and a SSD. Apparently every single person that did that has the same issue: i5 works fine (it is in the official CPU supported list) however is 2 cores/ 2 threads. You need the right BIOS for it. Finding it was easy, I used the laptop's service tag and it showed only three BIOS options for this laptop in Lenovo's page. Right now it has the latest BIOS released from Lenovo, but I need the previous one. I downloaded it, but when I start the .exe file I got this error:

1601582736638.png


In the BIOS there is this option: BIOS Flash Back [ enabled/disabled ]. Should it be "Disabled" -> both options don't fix the error above. I'd be happy if we can solve that.
 

Solaris17

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BIOS flashback will need to be Enabled. But that does not mean that it will allow downgrading which may be what you are running into.

I would see if the tool has a force option.
 
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BIOS flashback will need to be Enabled. But that does not mean that it will allow downgrading which may be what you are running into.

I would see if the tool has a force option.

Thanks, I enabled the BIOS. Could it be compatibility mode? On Lenovo's webpage it is listed under Windows 8. I did a fresh Windows 10 install. May be a missing Net framework 3.5 or something?
 
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Joined
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Messages
2,465 (0.55/day)
Location
Bulgaria
System Name Sandfiller
Processor I5-10400
Motherboard MSI MPG Z490 GAMING PLUS
Cooling Noctua NH-L9i (92x25mm fan)
Memory 32GB Corsair LPX 2400 Mhz DDR4 CL14
Video Card(s) MSI RX 5700 XT GAMING X
Storage Intel 670P 512GB
Display(s) 2560x1080 LG 29" + 22" LG
Case SS RV02
Audio Device(s) Creative Sound Blaster Z
Power Supply Fractal Design IntegraM 650W
Mouse Logitech Triathlon
Keyboard REDRAGON MITRA
Software Windows 11 Home x 64
OK, so I solved the problem by accident. While almost quitting I flashed the latest BIOS ( although the laptop had it) and when I restarted the i5 was correctly identified as 2 cores/ 4 threads. Otherwise I believe I would've just installed Win 8.1 and tried to flash on that OS. Interestingly Win 8 , not 8.1 is not be found anywhere (or at least I couldn't find it).
 
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