Forum - REQ ( Modded bios for Legion Y740-17IRHg Laptop (Lenovo)

#1 | REQ ( Modded bios for Legion Y740-17IRHg Laptop (Lenovo) - Type 81UJ) datum

Wed Sep 09, 2020 10:06 am (Last edited: Wed Sep 09, 2020 10:08 am)

Hello there,

I was hoping to have this bios modded to show hidden features. What I am most interested is unlocking the GPU power limit for the 2080 max Q. It currently power throttles at 90W. I was hoping to have it increased to 110 W for higher clock ceiling. If it's not possible to achieve that with system bios modding, do you think vbios modding is the route to go? Any help would be much appreciated.

link: https://mega.nz/file/ZNAwzIBb#3ZkkREEQ-l...Ap_gG4ZEEl0e7tk

Thanks

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#2 | RE: REQ ( Modded bios for Legion Y740-17IRHg Laptop (Lenovo) - Type 81UJ) datum

Sat Sep 12, 2020 1:25 pm

GPU power limits are set in vBIOS and oe EC FW, unlock BIOS will not help with that.

I can maybe still help you to unlock the BIOS though, if you want? If yes, please link me to your BIOS download page, and if this is Intel CPU system do below, if not Intel, then ignore

If you have already modified the BIOS in ANY way, you will need to re-flash it back to factory defaults using factory method (NOT FPT)!!!
Additionally, please remove all BIOS passwords, disable secure boot, and disable TPM or Encryption if you have enabled. Do this before moving on to below

If you do not have Intel ME drivers installed, install them now from your system driver download page, then start over here after reboot.
Check your BIOS' main page and see if ME FW version is shown. If not then > DOWNLOAD HWINFO64 HERE <

Once HWINFO is open, look at the large window on the left side, expand motherboard, and find the ME area.
Inside that section is the ME Firmware version. Take note of the version. (ie. write it down or get a screenshot)

Once you have that, go to the thread linked below, and in the section "C.2" find and download the matching ME System Tools Package for your system.
(ie if ME FW version = 10.x get V10 package, if 9.0-9.1 get V9.1 package, if 9.5 or above get V9.5 package etc)
> DOWNLOAD " ME System Tools " packages HERE <

Once downloaded, inside you will find Flash Programming Tool folder, and then inside that a Windows or Win/Win32 folder (NOT x64).
Highlight that Win/Win32 folder, then hold shift and press right click. Choose "open command window here" (Not power shell! >> * See Registry file below *).

If you get an error, reply to this post with a screenshot of it, OR write down the EXACT command entered and the EXACT error given.

((If "open command window here" does not appear, look for the "Simple Registry Edit" below...))

Step #1
Now you should be at the command prompt.
You are going to BACKUP the factory un-modified firmware, so type the following command:
Command: " FPTw.exe -bios -d biosreg.bin "

>> Attach the saved "biosreg.bin ", placed into a compressed ZIP/RAR file, to your next post!!! <<

Step #2
Right after you do that, try to write back the BIOS Region dump and see if you get any error(s).
Command: " FPTw.exe -bios -f biosreg.bin "
^^ This step is important! Don't forget! ^^

If you get an error, reply to this post with a screenshot of it, OR write down the EXACT command entered and the EXACT error given.

Here is a SIMPLE REGISTRY EDIT that adds "Open command window here as Administrator" to the right click menu, instead of Power Shell
Double-click downloaded file to install. Reboot after install may be required
> CLICK HERE TO DOWNLOAD CMD PROMPT REGISTRY ENTRY <

If the windows method above does NOT work for you...
Then you may have to copy all contents from the Flash Programming Tool \ DOS folder to the root of a Bootable USB disk and do the dump from DOS
( DOS command: " FPT.exe -bios -d biosreg.bin " )

Please don't send PM's for help on BIOS edits, I can't help with BIOS in PM's. Please make a thread and I will try to help as soon as I can - thanks!
If you appreciate my efforts and are willing to donate to help improve my hardware, gift cards work for me (Amazn, NuEgg, eBa) - send me a PM
I view the forum like this, please bump your thread 1x every 24-48 hours if no reply

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#3 | RE: REQ ( Modded bios for Legion Y740-17IRHg Laptop (Lenovo) - Type 81UJ) datum

Fri Sep 18, 2020 11:15 pm

My ME version is 12.0 but the files under C2 for version 12 is CSME. Is it okay to use the CSME system tools? Thanks

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#4 | RE: REQ ( Modded bios for Legion Y740-17IRHg Laptop (Lenovo) - Type 81UJ) datum

Sat Nov 14, 2020 3:46 am (Last edited: Tue Nov 24, 2020 2:46 pm)

@Lost_N_BIOS
Hi, Sorry Im not OP but requesting same unlocked bios for Y740. I had an error following your ME guide. Can you please help? Thank you
I will try again with bootable usb.

Original Bios
https://pcsupport.lenovo.com/uu/en/produ...ame=BIOS%2FUEFI

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#5 | RE: REQ ( Modded bios for Legion Y740-17IRHg Laptop (Lenovo) - Type 81UJ) datum

Fri Nov 20, 2020 2:43 pm (Last edited: Tue Nov 24, 2020 2:44 pm)

No joy.
I have SPI programmer....now to find the bios chip

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#6 | RE: REQ ( Modded bios for Legion Y740-17IRHg Laptop (Lenovo) - Type 81UJ) datum

Tue Nov 24, 2020 2:44 pm (Last edited: Tue Nov 24, 2020 2:45 pm)

right in front of battery connector if anyone is interested.

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#7 | RE: REQ ( Modded bios for Legion Y740-17IRHg Laptop (Lenovo) - Type 81UJ) datum

Sun Nov 29, 2020 3:12 am

I thought this model was more popular!? Im surprised no one else has asked for unlocked bios.

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#8 | RE: REQ ( Modded bios for Legion Y740-17IRHg Laptop (Lenovo) - Type 81UJ) datum

Sun Nov 29, 2020 11:21 am

@unsungloser - Yes, same/same, sorry for the late reply!

@Hirosake - Error is expected at step #2, we work around that and disable the blocks. But, we don't have to, since you have programmer, do you want to use that, or disable locks (if we can) and use FPT?
For W25Q128JV >> 1.18 (read OK, not write) or ASProgrammer 1.40/1.41 (OK read/write) or Colibri ver. 1.0.1.62 confirmed read/write OK (use BV ID)
Here is package with both of those that read/write OK to this chip - https://ufile.io/yfrr83tp

If you want to try without programmer first >>

Please download the following package, and run the command below from each versions folder that directly contains it's exe.
Before doing this, make sure you have secure boot disabled in BIOS, any BIOS password removed, and TPM/Encryption disabled.
Once done, copy the entire folder somewhere, delete everything but any created vars.txt and then repackage this and send to me.
This way all created vars.txt remain in place in the folders of the version that created them.
https://ufile.io/v70gxiwk

H2OUVE.exe -gv vars.txt

Please don't send PM's for help on BIOS edits, I can't help with BIOS in PM's. Please make a thread and I will try to help as soon as I can - thanks!
If you appreciate my efforts and are willing to donate to help improve my hardware, gift cards work for me (Amazn, NuEgg, eBa) - send me a PM
I view the forum like this, please bump your thread 1x every 24-48 hours if no reply

reply

#9 | RE: REQ ( Modded bios for Legion Y740-17IRHg Laptop (Lenovo) - Type 81UJ) datum

Sun Nov 29, 2020 4:25 pm (Last edited: Sun Nov 29, 2020 4:34 pm)

Thank you @Lost_N_BIOS
PM sent with vars link.

I dont know what im doing wrong with spi flasher. I can use (and have just now tested) it on msi 1070 mxm video card just fine. But no settings I try are able to find Y740 bios chip. Even setting it to winbond W25Q128bv doesnt help (as opposed to auto detect). Im sure it is set at 1.2v...but its the cheap aliexpress brand so doesnt come with anything like meaningfull instructions.

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#10 | RE: REQ ( Modded bios for Legion Y740-17IRHg Laptop (Lenovo) - Type 81UJ) datum

Sun Nov 29, 2020 5:52 pm

@Hirosake - Best to keep all here in thread, thanks. Please repost vars link here, after you confirm you have disabled secure boot, no BIOS password etc, from the spoiler I gave you (also below)
Send BIOS region dump from #1 + vars dump after all the stuff mentioned in spoiler is done ^^

If you have already modified the BIOS in ANY way, you will need to re-flash it back to factory defaults using factory method (NOT FPT)!!!
Additionally, please remove all BIOS passwords, disable secure boot, and disable TPM or Encryption if you have enabled. Do this before moving on to below

If you do not have Intel ME drivers installed, install them now from your system driver download page, then start over here after reboot.
Check your BIOS' main page and see if ME FW version is shown. If not then > DOWNLOAD HWINFO64 HERE <

Once HWINFO is open, look at the large window on the left side, expand motherboard, and find the ME area.
Inside that section is the ME Firmware version. Take note of the version. (ie. write it down or get a screenshot)

Once you have that, go to the thread linked below, and in the section "C.2" find and download the matching ME System Tools Package for your system.
(ie if ME FW version = 10.x get V10 package, if 9.0-9.1 get V9.1 package, if 9.5 or above get V9.5 package etc)
> DOWNLOAD " ME System Tools " packages HERE <

Once downloaded, inside you will find Flash Programming Tool folder, and then inside that a Windows or Win/Win32 folder (NOT x64).
Highlight that Win/Win32 folder, then hold shift and press right click. Choose "open command window here" (Not power shell! >> * See Registry file below *).

If you get an error, reply to this post with a screenshot of it, OR write down the EXACT command entered and the EXACT error given.

((If "open command window here" does not appear, look for the "Simple Registry Edit" below...))

Step #1
Now you should be at the command prompt.
You are going to BACKUP the factory un-modified firmware, so type the following command:
Command: " FPTw.exe -bios -d biosreg.bin "

>> Attach the saved "biosreg.bin ", placed into a compressed ZIP/RAR file, to your next post!!! <<

Step #2
Right after you do that, try to write back the BIOS Region dump and see if you get any error(s).
Command: " FPTw.exe -bios -f biosreg.bin "
^^ This step is important! Don't forget! ^^

If you get an error, reply to this post with a screenshot of it, OR write down the EXACT command entered and the EXACT error given.

Here is a SIMPLE REGISTRY EDIT that adds "Open command window here as Administrator" to the right click menu, instead of Power Shell
Double-click downloaded file to install. Reboot after install may be required
> CLICK HERE TO DOWNLOAD CMD PROMPT REGISTRY ENTRY <

If the windows method above does NOT work for you...
Then you may have to copy all contents from the Flash Programming Tool \ DOS folder to the root of a Bootable USB disk and do the dump from DOS
( DOS command: " FPT.exe -bios -d biosreg.bin " )

About your programmer, what programmer do you have? What do you mean 1.2v? This is 3.3v chip, and programmer should be used as standard if CH341A (No adapter, no jumper changes etc)
Some systems need main battery connected, or PSU cable, some need both connected, some need only one, some need both removed.

Please don't send PM's for help on BIOS edits, I can't help with BIOS in PM's. Please make a thread and I will try to help as soon as I can - thanks!
If you appreciate my efforts and are willing to donate to help improve my hardware, gift cards work for me (Amazn, NuEgg, eBa) - send me a PM
I view the forum like this, please bump your thread 1x every 24-48 hours if no reply

reply

#11 | RE: REQ ( Modded bios for Legion Y740-17IRHg Laptop (Lenovo) - Type 81UJ) datum

Mon Nov 30, 2020 8:50 am (Last edited: Tue Dec 01, 2020 7:11 am)

@ Lost_N_BIOS
Ah mate. Thank you! I feel like a real idiot. Barking way up wrong tree, thinking new chip lower voltage. Didnt think of 3.3v power rail!!..Anyway
After removing 1.8v adapter for mxm card i have 3 bios dumps.

For info I disconnected battery and ac adapter.

I should upload a link here?

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#12 | RE: REQ ( Modded bios for Legion Y740-17IRHg Laptop (Lenovo) - Type 81UJ) datum

Wed Dec 02, 2020 6:50 am (Last edited: Mon Dec 07, 2020 6:56 am)

@Lost_N_BIOS

https://www.udrop.com/1YI7/colibri.BIN

Vars
https://www.udrop.com/file/1YHd/Legion_Y740-17IRHg.zip

Here is link for my bios dump

Please see if you can work some magic and allow....everything :)

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#13 | RE: REQ ( Modded bios for Legion Y740-17IRHg Laptop (Lenovo) - Type 81UJ) datum

Tue Dec 15, 2020 7:27 am

@Hirosake - Sorry for the delay!! Do you want to use programmer, or try first without it?
If you want to try without it first, what error # did you get at step #2 in the FPT spoiler?
If you just want to be done with it all and use programmer, let me know and I will mod BIOS

Please don't send PM's for help on BIOS edits, I can't help with BIOS in PM's. Please make a thread and I will try to help as soon as I can - thanks!
If you appreciate my efforts and are willing to donate to help improve my hardware, gift cards work for me (Amazn, NuEgg, eBa) - send me a PM
I view the forum like this, please bump your thread 1x every 24-48 hours if no reply

reply

#14 | RE: REQ ( Modded bios for Legion Y740-17IRHg Laptop (Lenovo) - Type 81UJ) datum

Tue Dec 15, 2020 7:40 am

@Lost_N_BIOS No problem. I can see your busy and popular.
If it is not so much trouble I would like to try without programmer first. The error was 167: protected range registers.

If it doesnt work then I can always fall back on the programmer.
Thank you very much

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#15 | RE: REQ ( Modded bios for Legion Y740-17IRHg Laptop (Lenovo) - Type 81UJ) datum

Tue Dec 15, 2020 8:11 am (Last edited: Tue Dec 15, 2020 8:11 am)

@Hirosake - Yes, sorry, I am always buried, and keep too many tabs open at once, so I loose threads sometimes due to this
I need to learn/train myself a new way and not keep open so many tabs

Please upload your biosreg.bin dump from FPT step #1 (due to your Colibri dump above is 100% corrupted)
Go ahead and put the other two full BIOS dumps in zip w/ biosreg.bin, so I can check those for you too since we know Colibri dump is bad.
You're welcome! Sorry again for the delay!

Please don't send PM's for help on BIOS edits, I can't help with BIOS in PM's. Please make a thread and I will try to help as soon as I can - thanks!
If you appreciate my efforts and are willing to donate to help improve my hardware, gift cards work for me (Amazn, NuEgg, eBa) - send me a PM
I view the forum like this, please bump your thread 1x every 24-48 hours if no reply

reply

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