[Android Q&A, Help & Troubleshooting] yoyomaster73:
Hello all,

I am new of this forum but I read yet a lot of threads for multiples problems in the past.

Sorry for my english, I am french.

I create a thread because I try to help a little girl which has its Asus MeMO Pad 8 ME181CX bricked.

It can boot anymore.

SInce 2 days, I read a lot of resources on internet (google) and tried a lot of methods without success.

I tried the factory reset => Not works

I got the "UL-K011-WW-3_1_23_172.zip" file from ASUS => the file correspond to the "WW" tablet version

I tried adb commands (adb sideload) method => Not works

I tried fastboot flash => Not works

I tried flash a new recovery system (TWRP) => Not works, the tablet was not rooted so the bootloader prevents to flash the recovery mode.

My principal problem is that there is not the "system.img" file inside the official zip archive.

There is only "boot.img" and "fastboot.img".

I can flash them but it is not enough...I must flash the "system".

I have only the "system" folder so I searched a way to generate a "system.img" file from this folder.

Very not easy to do such a thing.

I booted on a Linux (Ubuntu) partition and I generated an ISO file from system folder, then with "dd" command I generate the "system.img".

All these things take a long time to do because of the size of datas to manipulate (between 500 MB and 1.5 GB).

Even with a "system.img" file, I cannot flash it on the tablet.

I tried first this :

C:\adttools>fastboot flash system system.img

target reported max download size of 569289386 bytes

Invalid sparse file format at header magi

error: write_sparse_skip_chunk: don't care size 1072334848 is not a multiple of the block size 4096

error: write_sparse_skip_chunk: don't care size 525682688 is not a multiple of the block size 4096

sending sparse 'system' 1/3 (544845 KB)...

error: write_sparse_skip_chunk: don't care size 1072334848 is not a multiple of the block size 4096

error: write_sparse_skip_chunk: don't care size 1072334848 is not a multiple of the block size 4096

OKAY [ 33.907s]

writing 'system' 1/3...

FAILED (remote: flash_cmds error!

)

finished. total time: 34.735s

So I tried after this :

C:\adttools>fastboot -S 512M flash system system.img

Invalid sparse file format at header magi

error: write_sparse_skip_chunk: don't care size 1118210048 is not a multiple of the block size 4096

error: write_sparse_skip_chunk: don't care size 635275264 is not a multiple of the block size 4096

error: write_sparse_skip_chunk: don't care size 139831296 is not a multiple of the block size 4096

sending sparse 'system' 1/4 (500349 KB)...

error: write_sparse_skip_chunk: don't care size 1118210048 is not a multiple of the block size 4096

error: write_sparse_skip_chunk: don't care size 1118210048 is not a multiple of the block size 4096

OKAY [ 28.740s]

writing 'system' 1/4...

FAILED (remote: flash_cmds error!

)

finished. total time: 29.448s

I found a program "SparseConverter_1.0.1" to try to chunk the "system.img" but it does not work because "system.img" has a size which is not a multiple of the block 4096.

And now, I cannot find another solution.

The ideal situation would be to find an authentic "system.img" file but it seems that ASUS does not want to give it for "WW" version.

Is someone has a idea to succeed to have this damned "system.img" file ?

Thanks a lot for any help I could receive on this problem.

I cannot imagine to say to this child that her tablet must go to the garbage.