[Q] Cannot Flash system.img topic

From my prevous thread:

Quote:

Hi all. i have rooted my Asus Transformer Pad TF132CX and using TitaniumBackup Pro uinstalled some system apps, and now it freezes on asus logo. Charging working, Using VOL+ and Power Button i can acess to DROIDBOOT, here i have fastboot acess, and i can reboot to recovery. I trayed ADB Sideload in Recovery, i am used stock firmware from Asus page, but it says: Signature Verification failed. Can anyone create backup from system in *.img format? I want to try use fastboot to flash system. Or custom recovery image (*.img) to flash this firmware. Or something like firmware for these models, or CPUs in *.img format , and then patch with ota update. I think TF103C and TF103CX are same. Or any other way how to unbrick? i have lastest Firmware in system, but Bricked

Now, my friend buyed second TF103CX, i have rooted irt and maked backup of system partition, and then unrooted.

But it have 1.58 GB, and i cannot flash that via fastboot.

C:\Users\Pavel Horniak\Desktop\Root Kit>fastboot flash system system.img
target reported max download size of 568229888 bytes
Invalid sparse file format at header magi

fastboot.exe has stopped working.

can anyone help me, how to flash that?