Hello Vodek.
Will your method work on a vn7-792g laptop. I would like to use win 7 on this machine
but have no audio available, which may be accessible from the advance menu.
Also to choose which graphics is default.
I have the latest BIOS v1.09 installed.
Is this possible,
Many thanks.
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(11-13-2016, 05:59 AM)Saddle Wrote: Will your method work on a vn7-792g laptop. I would like to use win 7 on this machine
but have no audio available, which may be accessible from the advance menu.
Also to choose which graphics is default.
NO Bios mod can be flashed using SPI-programmer+SOIC8 clip only
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(11-13-2016, 05:59 AM)Saddle Wrote: Will your method work on a vn7-792g laptop. I would like to use win 7 on this machine
but have no audio available, which may be accessible from the advance menu.
Also to choose which graphics is default.
NO Bios mod can be flashed using SPI-programmer+SOIC8 clip only
Thanks for your reply.
What would the procedure be for this, please ?
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11-13-2016, 08:39 PM (This post was last modified: 11-13-2016, 08:42 PM by espionage724.)
(11-13-2016, 01:37 PM)Saddle Wrote:
(11-13-2016, 06:23 AM)Dudu2002 Wrote:
(11-13-2016, 05:59 AM)Saddle Wrote: Will your method work on a vn7-792g laptop. I would like to use win 7 on this machine
but have no audio available, which may be accessible from the advance menu.
Also to choose which graphics is default.
NO Bios mod can be flashed using SPI-programmer+SOIC8 clip only
Thanks for your reply.
What would the procedure be for this, please ?
In-short, you use a programmer (can be a USB programmer connected to another computer or the GPIO pins on a Raspberry Pi) and flash a custom BIOS directly to the BIOS chip on the laptop. The programmer is connected to the BIOS chip via a SOIC clip.
Here's a (pretty unexplained) video of the process: https://youtu.be/W8hhMLZwghs (shows the opening of the laptop, attaching the SOIC clip, the long flash writing process (a few mins), and then the end shows the Terminal window for the commands and a close-up of the wires and SOIC clip)
I've done this on a VN7-572G with a Raspberry Pi and Pomona 5250 SOIC clip. Assuming the BIOS chip on the VN7-791G has the same (MX25L6405D) or similar BIOS chip, the same SOIC clip should work.
As for the programmer, a Raspberry Pi and flashrom worked fine for the MX25L6405D my 572G had. To figure out what chip your laptop has, you'll have to look at the model number on the chip itself (rip the keyboard off, look for a small 8-pin chip; there might be 3 of them; on a 572G the chip was towards the middle near the fan). If you're using a RPi, you'll need to manually compile Flashrom if you're using Raspbian.
As for pin layout and what wires go where between the chip and programmer, I had to look at some guide for another chip, and then compare it to the data sheet for my chip (it happened to match).
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(11-13-2016, 05:59 AM)Saddle Wrote: Will your method work on a vn7-792g laptop. I would like to use win 7 on this machine
but have no audio available, which may be accessible from the advance menu.
Also to choose which graphics is default.
NO Bios mod can be flashed using SPI-programmer+SOIC8 clip only
Thanks for your reply.
What would the procedure be for this, please ?
In-short, you use a programmer (can be a USB programmer connected to another computer or the GPIO pins on a Raspberry Pi) and flash a custom BIOS directly to the BIOS chip on the laptop. The programmer is connected to the BIOS chip via a SOIC clip.
Here's a (pretty unexplained) video of the process: https://youtu.be/W8hhMLZwghs (shows the opening of the laptop, attaching the SOIC clip, the long flash writing process (a few mins), and then the end shows the Terminal window for the commands and a close-up of the wires and SOIC clip)
I've done this on a VN7-572G with a Raspberry Pi and Pomona 5250 SOIC clip. Assuming the BIOS chip on the VN7-791G has the same (MX25L6405D) or similar BIOS chip, the same SOIC clip should work.
As for the programmer, a Raspberry Pi and flashrom worked fine for the MX25L6405D my 572G had. To figure out what chip your laptop has, you'll have to look at the model number on the chip itself (rip the keyboard off, look for a small 8-pin chip; there might be 3 of them; on a 572G the chip was towards the middle near the fan). If you're using a RPi, you'll need to manually compile Flashrom if you're using Raspbian.
As for pin layout and what wires go where between the chip and programmer, I had to look at some guide for another chip, and then compare it to the data sheet for my chip (it happened to match).
Thanks for that, he doesn't say much !!!
I think I'll use a SB audio stick for now.
One thing I've noticed using the Intel system Utility is that disabling SECURE BOOT switches
the BIOS to legacy mode, even if UEFI is selected. I scanned with and without SECURE BOOT to
confirm this. I guess that's why I couldn't boot with a UEFI USB to install the OS.
This might be useful for someome.
Thanks for your help.
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(11-13-2016, 05:59 AM)Saddle Wrote: Will your method work on a vn7-792g laptop. I would like to use win 7 on this machine
but have no audio available, which may be accessible from the advance menu.
Also to choose which graphics is default.
NO Bios mod can be flashed using SPI-programmer+SOIC8 clip only
Thanks for your reply.
What would the procedure be for this, please ?
In-short, you use a programmer (can be a USB programmer connected to another computer or the GPIO pins on a Raspberry Pi) and flash a custom BIOS directly to the BIOS chip on the laptop. The programmer is connected to the BIOS chip via a SOIC clip.
Here's a (pretty unexplained) video of the process: https://youtu.be/W8hhMLZwghs (shows the opening of the laptop, attaching the SOIC clip, the long flash writing process (a few mins), and then the end shows the Terminal window for the commands and a close-up of the wires and SOIC clip)
I've done this on a VN7-572G with a Raspberry Pi and Pomona 5250 SOIC clip. Assuming the BIOS chip on the VN7-791G has the same (MX25L6405D) or similar BIOS chip, the same SOIC clip should work.
As for the programmer, a Raspberry Pi and flashrom worked fine for the MX25L6405D my 572G had. To figure out what chip your laptop has, you'll have to look at the model number on the chip itself (rip the keyboard off, look for a small 8-pin chip; there might be 3 of them; on a 572G the chip was towards the middle near the fan). If you're using a RPi, you'll need to manually compile Flashrom if you're using Raspbian.
As for pin layout and what wires go where between the chip and programmer, I had to look at some guide for another chip, and then compare it to the data sheet for my chip (it happened to match).
I notice that the problem seems to be with the VN7-**2G series notebooks, so I had a look at
the difference between the **2G and the **1G (which works).
I found that in the **2G series, there are 3 instances of 0x258, but on the **1G there is only 1.
That being the case, the Efishell command would never work on the**2G series as it will
try and alter the first instance and fail.
If there is a command to address only the second instance, then it may work without the
need for hardware. I attach the text files of the 3 laptops in the thread.
Many Thanks again.
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I have an Aspire VN7-792G-78G4 Nitro black edition with intel i7-6700HQ and Nvidia gtx 960m, Currently running latest bios version 1.09 from Acer website, I would like to unlock advanced menu on this laptop bios,
I would really appreciate if someone can do that for me, link to original bios is
I have an Aspire VN7-792G-78G4 Nitro black edition with intel i7-6700HQ and Nvidia gtx 960m, Currently running latest bios version 1.09 from Acer website, I would like to unlock advanced menu on this laptop bios,
I would really appreciate if someone can do that for me, link to original bios is
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[REQUEST] Acer VN7-792G BIOS Unlock
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