MK 802 III brick after trying to change from 1.8 Fineless for UG

[dmukhin]

Saw similar threads around but didn't find solution... I flashed to my MK 802 III (not S) Finless 1.8 for UG, it works but I saw that RM released new FW for my stick. When I tried to flash new I got error in Batch Tool (similar to the following, this log is last from endless attempts):

23:38:57 667    Rockchip Batch Tool v1.7.1.1 start run
23:39:58 601    **********Upgrade Start Total<1>**********
23:39:58 616    <Layer 1-1-2> Test Device Start
23:39:58 616    <Layer 1-1-2> Test Device Success
23:39:58 632    <Layer 1-1-2> Check Chip Start
23:39:58 632    <Layer 1-1-2> Check Chip Success
23:39:58 632    <Layer 1-1-2> Get FlashInfo Start
23:39:58 647    <LAYER 1-1-2> INFO:FlashInfo: 0 0 0 1 0 10 10 28 20 4 1
23:39:58 647    <Layer 1-1-2> Get FlashInfo Success
23:39:58 647    <Layer 1-1-2> Prepare IDB Start
23:39:58 647    <LAYER 1-1-2> INFO:CS(1)        (8192MB)        (MICRON)
23:39:58 881    <LAYER 1-1-2> INFO:FindBackupBuffer-->No Found Tag
23:39:58 881    <LAYER 1-1-2> INFO:FindBackupBuffer-->No Found Tag
23:39:58 897    <LAYER 1-1-2> INFO:FindBackupBuffer-->No Found Tag
23:39:58 897    <LAYER 1-1-2> INFO:FindBackupBuffer-->No Found Tag
23:39:58 897    <LAYER 1-1-2> INFO:FindBackupBuffer-->No Found Tag
23:39:58 897    <LAYER 1-1-2> ERROR:PrepareIDB-->Loader-->No Found IDB
23:39:58 913    <Layer 1-1-2> Prepare IDB Fail
23:39:58 913    **********Upgrade Done Success<0> Fail<1> Time<312>ms**********

ROM Flash Tool doesn't help to flash Finless 1.8 back:

23:42:10 780    Load Setting ok
23:42:10 936    Finless ROM Flash Tool - RKAndroidTool v1.3.5.0 Start Run
23:42:10 936    Scan thread:1740
23:42:10 951    ProcessID:1760,ThreadID:4320,RefCount:0
23:42:10 951    ProcessID:1760,ThreadID:1740,RefCount:0
23:42:10 967    Info:(thread=1496)IoControlProc-->DeviceIoControl In
23:42:10 967    Info:(thread=1496)IoControlProc-->DeviceIoControl Out,ret=1,err=183
23:42:10 998    Info:(thread=5320)IoControlProc-->DeviceIoControl In
23:42:10 998    Info:(thread=5320)IoControlProc-->DeviceIoControl Out,ret=1,err=183
23:42:11 029    Info:(thread=3384)IoControlProc-->DeviceIoControl In
23:42:11 029    Info:(thread=3384)IoControlProc-->DeviceIoControl Out,ret=1,err=183
23:42:11 029    Info:(thread=700)IoControlProc-->DeviceIoControl In
23:42:11 232    Info:(thread=700)IoControlProc-->DeviceIoControl Out,ret=1,err=183
23:42:13 712    Loader Device Path(\\?\USB#VID_2207&PID_300A#6&8B0A287&0&2#{a5dcbf10-6530-11d2-901f-00c04fb951ed}),ThreadID=3212
23:42:13 712    INFO:Start to test device
23:42:13 728    INFO:Start to run
23:42:13 728    INFO:Test device OK
23:42:13 728    INFO:Start to download IDB
23:42:13 744    Flash Chip Information:
23:42:13 744    NO        SIZE(MB)    Manufacturer
23:42:13 744    ----------------------------------------------
23:42:13 744    0        8192MB    MICRON
23:42:13 744    ----------------------------------------------
23:42:13 744    INFO:BuildFlashStateMap start
23:42:13 744    INFO: FindAllIDB start
23:42:14 851    ERROR: FindAllIDB failed
23:42:14 867    Error:Download IDB failed
23:42:14 867    INFO:LoaderThread failed
23:42:14 867    ERROR:Run failed
23:42:17 784    Info:wait for exiting scan thread start
23:42:18 034    Info:wait for exiting main thread start
23:42:18 049    ProcessID:1760,ThreadID:4320,RefCount:0

Of course, I erased IDB on some attempts... Erasing works in both tools w/o errors. What's strange everything works the same way if I have recovery button pushed on stick connect or didn't push it...

Pls help me Thanks

[dmukhin]

Well, I finally managed to fix this and flash new firmwareWith 6/7 flash chip pins shorted. Not sure why I didn't get success with that before, maybe my tool was not perfect

The problem was that with or without recovery button pushed stick always started in "loader" USB mode (green box color in Batch Tool). And I already erased flash (this is why I didn't need button to enter recovery mode: nothing could be loaded anyway) and IDB (not sure what IDB exactly is for and where it is located: in regular flash too or separately addressed). Both ROM Flash and Batch Tool seem to unable to flash in "loader" mode w/o IDB found (but erasing functionality works). But if IDB is OK flashing works fine there (pushing recovery button on start loads to this mode exactly). Finally the only solution is to get to "mask ROM" mode (blue box in Batch Tool) by shorting pins.

Not sure why I get this problem after flashing Finless ROM, remember I pushed "erase" from ROM Flash Tool before flashing Finless, did this kill IDB? And I'm not sure about those "loader" and "mask ROM" USB mode differences... Flashing RK devices is nighmare comparing even with locked loader devices

[olind]

I'm glad you got it to work! I think I'm having the same problem as you on my MK802III. Can you please tell me how you managed to get it to work again?

Thanks in advance!

[dmukhin]

If you flash stock, you should try to follow document about "short circuit" method, look for the doc file in zip

[olind]

I used the stock 4.2.2 firmware, changed usb port & changed usb cable. I tried once more by shortening the pins. And it worked right away.

Am now using the 4.2.2 stock firmware and so far it works fine