Looking for Board K9126H2V1M AK1025 Display RHOS XY 1.8B V1

[Ajit]

Hi ,

I have a Kingzon MP3/4 player. its dead now and i think there is no firmware on it. when i connect to USB , the mp3 starts rebooting. I can just see the white screen flashing.

And when it was having the firmware on it , it was rebooting as well and that time i could see the screen blue screen and hourglass picture. but i was not able to connect it to USB as it would just reboot without letting windows to detect it.

I thought it to be a firmware issue and tried to re flash the player. I did something to the player so that it doesn't rebook when connected to USB and flashed some firmware. After that there is just white screen and i cannot flash it now. i get an error "Unknown flash error" for all the flashes i am trying to flash onto it.

I need help and directions to make it work. Also I want to know if the firmware resides on the micro controller flash or the NAND flash.

MP3/4 details

Board - K9126H2V1M
MC - AK1025
Flash - Samsung 743 K9LAG08U0M PCB0 (its 2 GB)
Display - RHOS XY - 1.8B - V1 ( I don't see any other code on it)

I can post photos if it can help you.

http://www.kingzon.de/de/pro/Multimedia/MP4/M42P.html - product site

Thanks

[lolita]

Try this one, I'm somewhat doubtful it'll work but do it anyway:

http://www.s1fw.com/Firmware-1/LG-XB...--11c--fw.html

If it doesn't work, then try the XY-1.8B display firmware here:

http://www.s1fw.com/plus/search.php?...e=titlekeyword

[Ajit]

I tried it earlier and it didnt work.

I have a feeling that may be i am not doing it right.

I am using the Kingzon utility (MP# Player Utilities 3.57) and with a ll the firmwares i get the same error "Unknown flash Error". Can i find the datasheet somewhere. I dont know , it could be some component faliure and i juat wanted to know the voltages required for VCC and VDD.

Oh and i wanted to know if this firmware goes onto AK1025 or it will go on the flash (Samsung chip)?

Thanks
Ajit

[lolita]

Use a different version of MP3 player utility.

[Ajit]

Yeah i was doing, I tried 3 and all were not working. Finally i got the one which worked for me (5.09). Though i dont have the display but i can see the player as mass storage. So i am getting somewhere now.

I have to give 4 volts to VDD for the player to switch on. Would you be able to say where the fault could be?

[lolita]

Different versions of player utility have different knowledge of NAND flash IDs.

Which firmware makes player become U disk? I'm guessing it's the CM70048 one. But your display is an XY-1.8B, so try any of the XY-1.8B display firmware. Just getting an hourglass is enough to know that you have the display controller and connectivity correct.

[Ajit]

CM70048 didnt work for me. I get an error when i that file. The MP3 utility rejects it saying the firmware protocol is not the same as previous firmware. I could into U Disk mode with 3 - 4 firmwares but nothing really seems to be working. I didnt get the hour glass or anything on the screen. Still workinf and downloading firmwares.

Thanks for following up.
I think by the time i finish with this mp3 player, i might start making my own brand

[lolita]

You have to use HARD ADFU mode, i.e. follow steps in DEAD PLAYER RECOVERY GUIDE. If you do it correctly player will not appear as U disk when you plug it in, only as ADFU device. Then player utility can upload any firmware.

Otherwise it is assuming an upgrade and not a full install.

[Ajit]

I am trying in the HARD ADFU mode. I connect the USB cable, I short 2 pins of the flash(ping 42-43) , switch the player on and i see the player as ADFU device. I flash the device and restart it. Now i can see it as Mass storage device.

I cannot switch on the device without increasing the voltage on VDD. I know its not a hardware fourm but if you can give me some pointers as to why its happening then may be i could reach a solution.

Another thing, how can i see what is the current firmware version (my display is just white so i am thinking if there is another way to see the version).

I remember that before flashing, I saw LSD_91N18H_A1 and thats all I know about me previous firmware.

thanks

[lolita]

What do you mean by increase the voltage? USB bus is +5v, and lion battery is around 3.7v.

The current firmware version is whatever you flashed to the player.