[Q] Mid Tablet Help - Android Software/Hacking General [Developers Only]

Hy Folks!!!
I bought a Mid tablet 2 days ago It's a sun4i CRANE-A721 and has an Allwinner A10 cpu with android 4.0.4
I found the original firmware, an .img file,
I want to modify it but 7zip and winrar gave me an error.. how can i modify it ?? i want to cook a room based on this firmware.
Suggestion??
Thanks a lot!!!

@nicepose,
a) did You try to re-download the *.img?
or
b) update the 7zip You used?
did You reat this post here:
New Firmware for the Allwinner A10 LY-F1, A10 LY-F1HD A13 LY-FI
it looks like our devices based on this image(s):
LY-F1S
the third image reveals the back with the exact opening mine has (mine has a "QUART" as the "brand")
hope this helps (there are more *.img for download)
best regards,
Stevan C.

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I've tried multiple way of getting settings.new.dat.br file extracted but to no luck
I need a extracter
And recompiler
And update zip maker
(from the pure basic of what I can look at and say I'd need before modifying the rom)
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Click to expand...
Click to collapse
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