GL502VM Rev. 2.1 Keyboard Problem [SOLVED]

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  • lazaro.089
    Senior Member
    • Jun 2014
    • 79
    • Mexico

    #1

    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?
  • caspian
    Badcaps Legend
    • Oct 2015
    • 1589
    • Laptop

    #2
    Re: GL502VM Rev. 2.1 Keyboard Problem

    Do Touchpad and USB keyboard work fine with this laptop?

    Comment

    • lazaro.089
      Senior Member
      • Jun 2014
      • 79
      • Mexico

      #3
      Re: GL502VM Rev. 2.1 Keyboard Problem

      Yes, they work fine.
      Keyboard is dead even in BIOS.

      Comment

      • jasko_jacker
        Badcaps Legend
        • Oct 2014
        • 1137
        • italy

        #4
        Re: GL502VM Rev. 2.1 Keyboard Problem

        are you sure you used the correct file for the keyboard controller?

        Comment

        • lazaro.089
          Senior Member
          • Jun 2014
          • 79
          • Mexico

          #5
          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.

          Comment

          • jasko_jacker
            Badcaps Legend
            • Oct 2014
            • 1137
            • italy

            #6
            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.

            Comment

            • mcplslg123
              Badcaps Legend
              • Jun 2015
              • 7262
              • india

              #7
              Re: GL502VM Rev. 2.1 Keyboard Problem

              Originally posted by lazaro.089
              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.

              Comment

              • jasko_jacker
                Badcaps Legend
                • Oct 2014
                • 1137
                • italy

                #8
                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

                Comment

                • SMDFlea
                  Super Moderator
                  • Jan 2018
                  • 20326
                  • UK

                  #9
                  Re: GL502VM Rev. 2.1 Keyboard Problem

                  Edit:looking at wrong boardview
                  Last edited by SMDFlea; 09-22-2019, 11:33 AM.
                  All donations to badcaps are welcome, click on this link to donate. Thanks to all supporters

                  Comment

                  • jasko_jacker
                    Badcaps Legend
                    • Oct 2014
                    • 1137
                    • italy

                    #10
                    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 Files
                    Last edited by jasko_jacker; 09-22-2019, 04:03 PM.

                    Comment

                    • lazaro.089
                      Senior Member
                      • Jun 2014
                      • 79
                      • Mexico

                      #11
                      Re: GL502VM Rev. 2.1 Keyboard Problem

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

                      Here is my main Bios dump


                      Originally posted by jasko_jacker
                      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.
                      Last edited by SMDFlea; 12-27-2023, 05:37 AM.

                      Comment

                      • lazaro.089
                        Senior Member
                        • Jun 2014
                        • 79
                        • Mexico

                        #12
                        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.

                        Comment

                        • SMDFlea
                          Super Moderator
                          • Jan 2018
                          • 20326
                          • UK

                          #13
                          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
                          All donations to badcaps are welcome, click on this link to donate. Thanks to all supporters

                          Comment

                          • SMDFlea
                            Super Moderator
                            • Jan 2018
                            • 20326
                            • UK

                            #14
                            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.
                            All donations to badcaps are welcome, click on this link to donate. Thanks to all supporters

                            Comment

                            • lazaro.089
                              Senior Member
                              • Jun 2014
                              • 79
                              • Mexico

                              #15
                              Re: GL502VM Rev. 2.1 Keyboard Problem

                              Originally posted by SMDFlea

                              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?

                              Comment

                              • mcplslg123
                                Badcaps Legend
                                • Jun 2015
                                • 7262
                                • india

                                #16
                                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.

                                Comment

                                • lazaro.089
                                  Senior Member
                                  • Jun 2014
                                  • 79
                                  • Mexico

                                  #17
                                  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, 03:34 PM. Reason: Update

                                  Comment

                                  • lazaro.089
                                    Senior Member
                                    • Jun 2014
                                    • 79
                                    • Mexico

                                    #18
                                    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.


                                    https://www.badcaps.net/forum/showpo...9&postcount=15

                                    .
                                    Last edited by SMDFlea; 09-23-2021, 06:30 AM.

                                    Comment

                                    • SMDFlea
                                      Super Moderator
                                      • Jan 2018
                                      • 20326
                                      • UK

                                      #19
                                      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, 03:53 AM.
                                      All donations to badcaps are welcome, click on this link to donate. Thanks to all supporters

                                      Comment

                                      • jasko_jacker
                                        Badcaps Legend
                                        • Oct 2014
                                        • 1137
                                        • italy

                                        #20
                                        Re: GL502VM Rev. 2.1 Keyboard Problem [SOLVED]

                                        Thanks

                                        Comment

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