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HP6735s "invalid serial number", bios needed

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    HP6735s "invalid serial number", bios needed

    Hello. Have this HP6735S with error "invalid serial number". i read about serial changers booting from usb, but i cannot make any usb booting from it. I see that bios ic was touched.

    Bios bin from hp website have 2MB but i have only 1MB chip so bios is needed.

    Its full AMD/ATI system
    Last edited by ktmmotocross; 02-06-2015, 05:32 PM.

    #2
    Re: HP6735s "invalid serial number", bios needed

    in schematic i found that there may be 2mb biios ic so maybe it was changed. but bios menu work ok even with 1mb bios ic

    Comment


      #3
      Re: HP6735s "invalid serial number", bios needed

      try this
      type in folder NbDmiFit

      and good luck
      Attached Files
      Just cook it! It's already broken.

      Comment


        #4
        Re: HP6735s "invalid serial number", bios needed

        allready have it, but cannot boot to any device. when i show the boot order, no device is show.

        anybody can me prove that this motherboard have 2MB bios?

        Comment


          #5
          Re: HP6735s "invalid serial number", bios needed

          give full motherboard code, or your dump before you wrote that bios with error message

          when i have trouble i take serial and rest dmi data from on working bios, insert it to new bios from web and then write bios fixed with serial and everythig, do no error and no need for DMI tool
          Im Back... sort of...

          Comment


            #6
            Re: HP6735s "invalid serial number", bios needed

            i want to do it too, but on hp website is 2mb bios rom and i have 1mb bios ic. but in schematic is 2mb ic so im bit confused
            Last edited by ktmmotocross; 02-07-2015, 03:03 AM.

            Comment


              #7
              Re: HP6735s "invalid serial number", bios needed

              sometimes it so simple that thay put 2mb eprom, but bios is 1mb size so 1mb empty (0xFF hex)... ive seen it few times

              pls give motherboard code to be sure, i can find dump from other working laptop
              Im Back... sort of...

              Comment


                #8
                Re: HP6735s "invalid serial number", bios needed

                i found only this mark /photo/

                i attached original rom that showing error. bios ic is 1mb

                ps: why i cannot post bin file and must rar it?
                Attached Files

                Comment


                  #9
                  Re: HP6735s "invalid serial number", bios needed

                  underneath that sticker is a motherboard code which is i guess 6050A2235601-MB-A03

                  all dumps i found are 2 mb.... schematics also says 2mb SST_25VF016B...

                  why not take eeprom from other non working board and put it in... its worth a try.... any 2mb spi eeprom should work

                  did you see traces of soldering when opened? maybe someone did some work before you... :/
                  Im Back... sort of...

                  Comment


                    #10
                    Re: HP6735s "invalid serial number", bios needed

                    i found the right ic in hp 625 board. programming with origo hp rom.
                    ill let u know how it goes

                    Comment


                      #11
                      Re: HP6735s "invalid serial number", bios needed

                      Solved.
                      i bad check bios id. it was 2MB, but it was corrupted. Cannot program it to end. So i took the same from HP 625 and program it. now i can see boot devices and can boot to DMI and change the sn.

                      I attach DMI with usb format tool.
                      Attached Files

                      Comment


                        #12
                        Re: HP6735s "invalid serial number", bios needed

                        glad to hear its working
                        Im Back... sort of...

                        Comment


                          #13
                          Re: HP6735s "invalid serial number", bios needed

                          Hi,send me the Hash code after you tried 3 attempts,then i iwll give yoy the password to unlock it free of charge.

                          Thanks

                          Comment


                            #14
                            Re: HP6735s "invalid serial number", bios needed

                            i have a same problem on my HP Folio 9470 but this doesn't work, it seems my lap is suppose to be retattoo by this tool

                            Comment


                              #15
                              Re: HP6735s "invalid serial number", bios needed

                              Originally posted by thesleepwalker View Post
                              i have a same problem on my HP Folio 9470 but this doesn't work, it seems my lap is suppose to be retattoo by this tool
                              for newer hp , like 9470M use wndmifit or biosconfigutility
                              Attached Files

                              Comment


                                #16
                                Re: HP6735s "invalid serial number", bios needed

                                Originally posted by mrwab
                                hello please can you explain this process for new model of hp
                                try find readme folder, depending your model,

                                Comment


                                  #17
                                  Re: HP6735s "invalid serial number", bios needed

                                  i'm testing writing serial and sku number in hp elitebook 8560W and hp envy 17 but NOT save after the process show message programming successful

                                  Comment


                                    #18
                                    Re: HP6735s "invalid serial number", bios needed

                                    you need the correct program with the correct platform,

                                    Comment


                                      #19
                                      Re: HP6735s "invalid serial number", bios needed

                                      Originally posted by rioreno View Post
                                      for newer hp , like 9470M use wndmifit or biosconfigutility
                                      thanks for the tool bro

                                      Comment


                                        #20
                                        Re: HP6735s "invalid serial number", bios needed

                                        Originally posted by thesleepwalker View Post
                                        thanks for the tool bro
                                        you welcome...

                                        Comment

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