majestic tab 486hd rom

hi all..... i have in the hand this damned tab, the problem is that this sh....t go into bootloop and i don't find any compatible rom.... any suggestion?
majestic don't relase the firmware to nobody.... help!!!!

7" HD (1024x600)
Processor A7 Dual Core MTK 8312 1GHz
RAM: 512MB DDRIII
GPU Mali MP400

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