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New Firmware on new shipping N101's

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    #16
    Ah no man I did not flash the dump, I flashed the beta firmware tuen gave me that is based on the dump, because I indeed am a linux newbie and wouldnt know how to repack the tar etc so I assumed that is exactly what tuen had done. He gave me a .img to flash with RKbatchtool

    Problem that remains is the backlight issue, I dont get any working backlight apart from bootloader v1.11 where the built in recovery is running (just to format data/cache/sdcard) and then it goes black again.

    Looking forward to see if you can get my tablet working properly again, and also looking forward to be able to confirm or not if the kernel actually makes a difference in backlight bleeding (would be weird, but possible)

    Thanks for your trouble!

    In the mean time Ill keep experimenting, attempt to extract the kernel.img myself and flash YOUR rom with the new kernel :P Who knows it might work.. But it would nice to have a working flash package to restore my tablet to factory default aswell

    Comment

      #17
      I do not think there is any way a firmware could correct backlight bleeding. That is pure hardware. The only thing a firmware can control is brightness.

      I cant promise I can fix your problem but once we have all the parst we can then mix and match and maybe get lucky.

      Bob
      "Pzebacz im, bo nie wiedzą, co czynią"
      "Прости им, они не ведают, что творят"
      "Perdona loro perché non sanno quello che fanno"
      "Vergib ihnen, denn sie wissen nicht, was sie tun"
      "Vergeef hen want ze weten niet wat ze doen"
      "Pardonne-leur car ils ne savent pas ce qu'ils font"
      "Perdónalos porque no saben que lo que hacen"
      "Oprosti im, jer ne znaju što čine"
      "Forgive them as they know not what they do"





      Comment

        #18
        Originally posted by Finless View Post
        I do not think there is any way a firmware could correct backlight bleeding. That is pure hardware. The only thing a firmware can control is brightness.

        I cant promise I can fix your problem but once we have all the parst we can then mix and match and maybe get lucky.

        Bob
        Mine has screen bleed top left hand corner. If people check you will probably see the same but you need a dark screen to see it.

        Sent from my SK17i using Tapatalk 2
        Please consider donating to purchase tablets for Finless Bob to continue his work. This will help in the creation of custom roms and build an even stronger development base for our community. Thank you for you support!

        PLEASE CLICK THE DONATE BUTTON BELOW

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        Comment

          #19
          Failed trying to extract the .img files (boot and recovery) unyaffs tells me 'broken image file' oh well was worth a shot.

          EDIT: Succeeded using cygwin and some perl script, trying to flash 1.5a now with the new kernel, its just a random try, but even if its useless Im still learning here :P

          Comment

            #20
            The perl scripts that unpack boot leaves you with a raw kernel. That will not work.
            First you need to open that in a hex editor and strip off the huge blank area to D3 F0. You do not have to but there also will be a huge blank area at the end as well. So optional to strip that off. Then you need to use rkcrc to wrap the the RK header around that thus making it kernel.img. Then you can flash that kernel.img

            Bob
            "Pzebacz im, bo nie wiedzą, co czynią"
            "Прости им, они не ведают, что творят"
            "Perdona loro perché non sanno quello che fanno"
            "Vergib ihnen, denn sie wissen nicht, was sie tun"
            "Vergeef hen want ze weten niet wat ze doen"
            "Pardonne-leur car ils ne savent pas ce qu'ils font"
            "Perdónalos porque no saben que lo que hacen"
            "Oprosti im, jer ne znaju što čine"
            "Forgive them as they know not what they do"





            Comment

              #21
              Actually, I opened it up in a hex editor, and it starts with 'D3 F0'

              It ends with 74 0B

              Before the last 2 lines theres a whole bunch of zero's indeed

              Trying to do what you suggested, thanks for the 'lessons' by the way.

              What do you think about this backlight not working issue with your 1.5a rom? Does this mean there is a hardware difference with the previous batch? Or could it have a different reason?

              Comment

                #22
                OK so the fact that the backlight works in recovery, which means the kernel is loaded, leads me to beleave it's possible this kernel handles the backlight different. In fact you can use a different kernel in recovery than in boot! But whatever kernel is in boot is used for booting the system.img

                My ROM I removed the kernel from boot and recovery. So ONE kernel.img is used for everything including booting the system.

                So what we need to do it take this new kernel.img out of boot and recovery. Make a new ROM so ONLY this kernel is used for everything. If your backlight doesnt work for anything at that point then we may want to look at the kernel that is in recovery and see if it is a match ot the kernel that is in boot.

                FYI if you want to try, you take apart recovery the same way you took apart boot!
                Then use vbindiff to compare the 2.

                Bob
                "Pzebacz im, bo nie wiedzą, co czynią"
                "Прости им, они не ведают, что творят"
                "Perdona loro perché non sanno quello che fanno"
                "Vergib ihnen, denn sie wissen nicht, was sie tun"
                "Vergeef hen want ze weten niet wat ze doen"
                "Pardonne-leur car ils ne savent pas ce qu'ils font"
                "Perdónalos porque no saben que lo que hacen"
                "Oprosti im, jer ne znaju što čine"
                "Forgive them as they know not what they do"





                Comment

                  #23
                  Going to extract and compare them, also tuen sent me a 3rd beta, in which the backlight keeps working but his rom seems to simply not boot up. He used the boot/recovery from the dump.

                  That any useful info to you?

                  EDIT: Done, they look exactly the same to me in VBinDiff, the recovery kernel (raw) and the boot kernel (raw)

                  Installing ubuntu now (virtual) I really hate unity though, but your thread is based on using ubuntu so that makes things easier, or are your tips n tricks here: http://www.freaktab.com/showthread.p...cks-by-Finless also valid for a debian install?

                  Comment

                    #24
                    When will it be that you're home and actually have time to work on this stuff? Not trying to rush you, just want to know if its worth it to stay awake waiting or not.

                    EDIT: Tuen's v4 system.img is working in combination with the boot recovery and kernel I extracted, finally all seems working
                    Last edited by Meneer; 13 August 2012, 23:22.

                    Comment

                      #25
                      ps. If anyone else can make a dump, it would be welcome, just in case the dump we have now is a bad one.

                      Comment

                        #26
                        I just got home and will be digging in now!

                        Give me 30 minutes to see if I can get this dump working!

                        Glad to hear you got the kernels compared! SOmething I dont have to spend tiume to do.

                        Bob
                        "Pzebacz im, bo nie wiedzą, co czynią"
                        "Прости им, они не ведают, что творят"
                        "Perdona loro perché non sanno quello che fanno"
                        "Vergib ihnen, denn sie wissen nicht, was sie tun"
                        "Vergeef hen want ze weten niet wat ze doen"
                        "Pardonne-leur car ils ne savent pas ce qu'ils font"
                        "Perdónalos porque no saben que lo que hacen"
                        "Oprosti im, jer ne znaju što čine"
                        "Forgive them as they know not what they do"





                        Comment

                          #27
                          TEST #1

                          I pulled kernel out of boot.img. I then made a .img out of it.

                          I flashed the kernel.img only to my exising 1.5a ROM installed on my N101.

                          It boots with no issues.

                          About tablet says:
                          Kernel Version
                          3.0.8+
                          root@xingyu-desktop #26
                          SMP PREEMPT Sat Aug 4 04:50:06 EDT 2012

                          So.... I want ot compare this kernel to the others and see if we really have a difference.

                          Be back in a few,
                          Bob
                          "Pzebacz im, bo nie wiedzą, co czynią"
                          "Прости им, они не ведают, что творят"
                          "Perdona loro perché non sanno quello che fanno"
                          "Vergib ihnen, denn sie wissen nicht, was sie tun"
                          "Vergeef hen want ze weten niet wat ze doen"
                          "Pardonne-leur car ils ne savent pas ce qu'ils font"
                          "Perdónalos porque no saben que lo que hacen"
                          "Oprosti im, jer ne znaju što čine"
                          "Forgive them as they know not what they do"





                          Comment

                            #28
                            Without the kernel I dont get backlight :P So there is atleast that difference, but good to see it also works on your tablet. Could you upload the kernel.img perhaps?

                            Comment

                              #29
                              TEST #2

                              OK just to make sure it boots, I flash the boot.img ONLY from the ROM dump onto my existing 1.5a ROM. It boots. So boot.img is a working image.

                              Also to make sure which kernel is being used, I reflashed kernel458.img using this dumped boot.img to see which kernel is reported by the system. My description was correct. If there is a kernel in boot.img then it is used no matter which version of kernel.img is flashed!


                              Be right back,
                              Bob
                              "Pzebacz im, bo nie wiedzą, co czynią"
                              "Прости им, они не ведают, что творят"
                              "Perdona loro perché non sanno quello che fanno"
                              "Vergib ihnen, denn sie wissen nicht, was sie tun"
                              "Vergeef hen want ze weten niet wat ze doen"
                              "Pardonne-leur car ils ne savent pas ce qu'ils font"
                              "Perdónalos porque no saben que lo que hacen"
                              "Oprosti im, jer ne znaju što čine"
                              "Forgive them as they know not what they do"





                              Comment

                                #30
                                Originally posted by Meneer View Post
                                Without the kernel I dont get backlight :P So there is atleast that difference, but good to see it also works on your tablet. Could you upload the kernel.img perhaps?
                                Here is the kernel.img I made and tested as working. Unzip it of course.

                                http://video.freaktab.com/?subpath=f...e=kernel26.zip

                                Bob
                                "Pzebacz im, bo nie wiedzą, co czynią"
                                "Прости им, они не ведают, что творят"
                                "Perdona loro perché non sanno quello che fanno"
                                "Vergib ihnen, denn sie wissen nicht, was sie tun"
                                "Vergeef hen want ze weten niet wat ze doen"
                                "Pardonne-leur car ils ne savent pas ce qu'ils font"
                                "Perdónalos porque no saben que lo que hacen"
                                "Oprosti im, jer ne znaju što čine"
                                "Forgive them as they know not what they do"





                                Comment

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