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Old 09-17-2019, 02:20 PM   #1
lazaro.089
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Default GL502VM Rev. 2.1 Keyboard Problem [SOLVED]

Hi Everyone!
I have an Asus ROG Strix GL502VM (the mohterboard says GL502VM Rev. 2.1 but it has an i7-7XXX Proc. so I think it actually is GL502VMK idk...)

The problem is with the keyboard. The power button works but every other key doesn't.

What I tried:
-Check the keyboard with Vertyanov Keyboard tester (Everything seems fine)
-Re-programmed the EC chip ITE8171FN-56. (Didn't work, flashed ok but verification failed every time at 82%.)
-Replaced ITE8171FN-56
-Reprogrammed new ITE8171FN-56. (It flashed and verified ok but keyboard still dead)

I don't know if I need to check the main BIOS, maybe Main Bios is rewriting EC Section on boot to the ITE8171FN.

Any ideas?
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Old 09-17-2019, 03:52 PM   #2
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Default Re: GL502VM Rev. 2.1 Keyboard Problem

Do Touchpad and USB keyboard work fine with this laptop?
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Old 09-17-2019, 05:56 PM   #3
lazaro.089
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Default Re: GL502VM Rev. 2.1 Keyboard Problem

Yes, they work fine.
Keyboard is dead even in BIOS.
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Old 09-17-2019, 07:24 PM   #4
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Default Re: GL502VM Rev. 2.1 Keyboard Problem

are you sure you used the correct file for the keyboard controller?
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Old 09-18-2019, 01:09 PM   #5
lazaro.089
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Default Re: GL502VM Rev. 2.1 Keyboard Problem

I used one downloaded from Vinafix.
I haven't found any other

I think it can be extracted from the main bios but i don't know how.
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Old 09-21-2019, 03:25 AM   #6
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Default Re: GL502VM Rev. 2.1 Keyboard Problem

I asked you this question because I asked for info on Vxxxxxx and the CEO did not know how to give me more info. I'm not sure, but I think that like ME, it programs itself automatically after programming the bios.
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Old 09-21-2019, 06:26 AM   #7
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Default Re: GL502VM Rev. 2.1 Keyboard Problem

Quote:
Originally Posted by lazaro.089 View Post
I used one downloaded from Vinafix.
I haven't found any other

I think it can be extracted from the main bios but i don't know how.
Post your bios backup here.There are enough experts here to extract EC from main bios.
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Old 09-21-2019, 06:55 PM   #8
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Default Re: GL502VM Rev. 2.1 Keyboard Problem

The problem (for me) is understand how this system works.
This notebook (gl502 series) has two ITE chips, the first is the IT8171FN-56 / BX for the keyboard and can be programmed via the keyboard port, the other IT8995VG-128 / CX has a dedicated port for its programming. I wanted to understand where its firmware is stored and if it has an internal memory, etc
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Old 09-22-2019, 11:02 AM   #9
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Default Re: GL502VM Rev. 2.1 Keyboard Problem

Edit:looking at wrong boardview

Last edited by SMDFlea; 09-22-2019 at 11:33 AM..
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Old 09-22-2019, 02:46 PM   #10
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Default Re: GL502VM Rev. 2.1 Keyboard Problem

Do you mean my card compared to the GL502VM model? , this and the gl502VSK have the same chips but positioned differently, and some components have the same identifier. I think the working principle is the same.
Attached Images
File Type: jpg 20190922_223851.jpg (463.8 KB, 45 views)
File Type: jpg GL502VSK_KEYB_CNT.jpg (485.2 KB, 46 views)

Last edited by jasko_jacker; 09-22-2019 at 04:03 PM..
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Old 09-23-2019, 09:56 AM   #11
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Default Re: GL502VM Rev. 2.1 Keyboard Problem

Sorry for the late response, I took off the weekend.

Here is my main Bios dump


Quote:
Originally Posted by jasko_jacker View Post
The problem (for me) is understand how this system works.
This notebook (gl502 series) has two ITE chips, the first is the IT8171FN-56 / BX for the keyboard and can be programmed via the keyboard port, the other IT8995VG-128 / CX has a dedicated port for its programming. I wanted to understand where its firmware is stored and if it has an internal memory, etc
I'm also wondering this. I have a board view but doesn't have an schematic.
Attached Files
File Type: zip orig.23-09-19.zip (138 Bytes, 41 views)
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Old 09-23-2019, 02:43 PM   #12
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Default Re: GL502VM Rev. 2.1 Keyboard Problem

I flashed the Main bios with
https://www.badcaps.net/forum/showth...658#post843658

But still no working keyboard.
I think the firmware is stored in IT8995VG-128 but I don't know how to program.
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Old 09-23-2019, 03:04 PM   #13
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Default Re: GL502VM Rev. 2.1 Keyboard Problem

Its the ITE8171 that gets programmed by a vertyanov programmer

GL502VM IT8171 KB_pins=30 LEFT DOWN FLASH=56 PD0=29 PD1=20 PD2=15 PD3=23 PD4=14 PD5=16 PD6=12 PD7=30 BUSY=26 STB=18 AFD=28 INIT=21 SLIN=19 KSI4=22 KSI5=24
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Old 09-23-2019, 03:12 PM   #14
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Default Re: GL502VM Rev. 2.1 Keyboard Problem

[QUOTE=lazaro.089;916709]Sorry for the late response, I took off the weekend.

Here is my main Bios dump

Your bios backup isn`t proper. Make another backup and post it in the other thread of yours in the bios requests.
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Old 09-23-2019, 11:10 PM   #15
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Default Re: GL502VM Rev. 2.1 Keyboard Problem

Quote:
Originally Posted by SMDFlea View Post

Your bios backup isn`t proper. Make another backup and post it in the other thread of yours in the bios requests.
Ok then I think I'm screwed, I didn't pay attention and the dump failed.

And I already overwritten the Main bios, It does boot tho, but I'm pretty sure it isn't the model because inside the bios it shows GL502VMZ

What should I do now?
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Old 09-24-2019, 07:19 AM   #16
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Default Re: GL502VM Rev. 2.1 Keyboard Problem

Look at post#4 in https://www.badcaps.net/forum/showthread.php?t=67696 for GL502VM rev 2.1 bios.
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Old 09-24-2019, 02:38 PM   #17
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Default Re: GL502VM Rev. 2.1 Keyboard Problem

Thanks! @mcplslg123
I have the correct dump thanks to @SMDFlea.

And I'm back to square 1. (At least I have the right dump)
Now, I'm trying to flash the EC, Trying with 8171 I only can flash 56K of the EC Dump.
So, I tried programming the IT8995 (I took precautions and this time dumped correctly before flashing)

I did flash the EC IT8995 with success. But I keep having the keyboard problems.

I'll check the boardview to track down the connections but I really think is firmware related. Because some dumps I try with IT8171 resulted in CapsLock led always on and others shut it down.

Any ideas what should I check next?

UPDATE:

I found out that Main Bios DOES rewrite the EC Bios after first boot.

Last edited by lazaro.089; 09-24-2019 at 03:34 PM.. Reason: Update
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Old 09-25-2019, 02:36 AM   #18
lazaro.089
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Arrow Re: GL502VM Rev. 2.1 Keyboard Problem

SOLUTION

I finally found a solution for the keyboard problem.

I found the Asus Keyboard Adjustment tool, extracted the .exe file and inside the ./.rsrc/1028/BINARY directory are located 4 56k sized FW_NK000XXXXX files.

These are different keyboard firmwares that can be flashed to IT8171fn-56.

For the GL502VMK board I used FW_NK0003000B and flashed it with Vertyanov.


I'll post these files as attachments for anyone that has the same problem.

PS. Can a mod mark this post as solved? I couldn't find the solved option.
Attached Files
File Type: zip IT8171fn-56_Firmware.zip (76.2 KB, 76 views)
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Old 09-25-2019, 03:46 AM   #19
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Default Re: GL502VM Rev. 2.1 Keyboard Problem

Thats a great fix. Can you post the IT8995 and other dumps into the your bios request post . https://www.badcaps.net/forum/showthread.php?t=79528

Last edited by SMDFlea; 09-25-2019 at 03:53 AM..
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Old 09-25-2019, 06:07 AM   #20
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Default Re: GL502VM Rev. 2.1 Keyboard Problem [SOLVED]

Thanks
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