help me bios ACER a715-42g

[zalier91]

Hi volinakis, thanks for the provided bios, now my question would be can I use some kind of USB + key combination method to install the new bios or do I need to use a ch341a programmer ?
Thanks again !!

[zalier91]

Thanks for the Bios file Volinakis !
Just a question now, can I add it on a Fat32 USB drive and use the FN+ESC+Power button method to flash it ? Or do I need the ch341a programmer and directly erase/flash the chip ?

[zalier91]

Hi again volinakis , sorry for the spam but I come with a proper dump now.
Turns out the Motherboard on these a715-42g models have some interference that don't allow you to read the bios chip properly while the chip is still mounted on the board by using ch341a and Clamps.
So I got a ch341a flash socket, removed the bios chip from MB and managed to read it / identify it with NeoProgrammer 2.20 in the first run.
I made 3 dumps and compared all with HxD editor and they are all similar, here is the dump, could you kindly adapt the DMI thing you mentioned?
Many thanks in advance and sorry for spamming........

[volinakis]

Hi again volinakis , sorry for the spam but I come with a proper dump now.
Turns out the Motherboard on these a715-42g models have some interference that don't allow you to read the bios chip properly while the chip is still mounted on the board by using ch341a and Clamps.
So I got a ch341a flash socket, removed the bios chip from MB and managed to read it / identify it with NeoProgrammer 2.20 in the first run.
I made 3 dumps and compared all with HxD editor and they are all similar, here is the dump, could you kindly adapt the DMI thing you mentioned?
Many thanks in advance and sorry for spamming........

try. Write chipset the same way you read it, with programmer, not USB

[zalier91]

Hi volinakis , I flashed the bios, soldered it back, now the fans don't even turn on, there's no post, no image, initially the fans turned on for a few seconds.
Could this be caused by the new bios ?
Thanks again !

[volinakis]

Hi volinakis , I flashed the bios, soldered it back, now the fans don't even turn on, there's no post, no image, initially the fans turned on for a few seconds.
Could this be caused by the new bios ?
Thanks again !

bios is extracted from update, it should work. Check soldering if you think you write it properly, CH341A is not quite reliable.

[Pragmatiko]

Hello,
could someone help me? Attached backup of mine bios. It's turn on with blank screen.

Thank you in advance.

[SMDFlea]

Hello,
could someone help me? Attached backup of mine bios. It's turn on with blank screen.

Thank you in advance.

RULES UPDATE for BIOS requests/offers AVOID BANNING, READ BEFORE POSTING
https://www.badcaps.net/forum/troubl...before-posting

You MUST:

• Provide the full machine model number, serial number (or Service tag, SNID) and the board model number (see https://www.badcaps.net/forum/showthread.php?t=88758 ) ,The serial number, make, full model number, motherboard model and revision (except QR codes) must be written/typed at your request as per the rules. Not as a picture, part of the file name and so on.

[Pragmatiko]

Hello,
could someone help me? Attached backup of mine bios. It's turn on with blank screen.

Thank you in advance.

Sorry, here the other info you need

S/N: NHQDLET0042080E65E3400

SNID: 20805897434

BOARD: GH5VZ LA-K831P Rev: 1A

Thank you!