Lenovo b5400
model of mb bm5 DA0BM5MB8D0 rev d
model : 20278
sn : qb07812057​
there just 1 bios 8 mb
i dont have old file
model of mb bm5 DA0BM5MB8D0 rev d
model : 20278
sn : qb07812057​
there just 1 bios 8 mb
i dont have old file
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100% TESTED WORKING BIOSComment
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Hi,
I have problem with battery replacement. Everytime I get error that battery is not original and It wouldn't charge.
I cannot download any older version of BIOS than the newest one J7ET63WW (older: J7ET54WW - J7ET62WW).
Does anyone have access to older versions and have knowleadge that I will be able to downgrade it?
FN + S + V - does not help. On second boot I still get message and even on the first boot battery does not charge (at least in Windows I get the error).
Lenovo B5400
SN: QB07853765
PN 59399254
MODEL NAME: 20278
bios installed on laptop (J7ET63WW)
https://download.lenovo.com/consumer...s/j7et63ww.exe
thanks in advanceComment
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For Badcaps Readers, Please note that I am hopefully going to present this same message to Lenovo to see if they have any insight to the matter as well and figured to share the entirety here for clarification. The System is out of warranty as it is but does have the option to have it extended.
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