ROM for Allview alldro 3 quad Speed ?

[khp]

Hi ,

i bought this tablet 3 years ago and was quite happy with it.
but now after a factory reset it doesnt boot anymore.
what i am looking for is a firmware version to put it to
to the sd-card and boot from there. i talked to allview but they
dont deliver a link. what they offer to send the tablet
to their service company in poland.

any ideas ?
thanks a lot in advance