Corrupted MBR, can't write anything to NAND

Hi, I have an Android tablet with A33 that I don't have firmware for, and which refuses to boot properly. I tried many times to write random firmware for A33 using PhoenixUSBPro tool or similar but it always fails on 0x162 error (_Download fesnand failed). What can I do?

The partition mappings for my tablet are as follows:

--------fastboot partitions--------
-total partitions:14-
-name-        -start-       -size-
bootloader  : 1000000       2000000
env         : 3000000       1000000
boot        : 4000000       1000000
system      : 5000000       80000000
misc        : 85000000      1000000
recovery    : 86000000      2000000
cache       : 88000000      30000000
metadata    : b8000000      1000000
private     : b9000000      1000000
frp         : ba000000      80000
empty       : ba080000      f80000
alog        : bb000000      5000000
media_data  : c0000000      1000000
UDISK       : c1000000      0
-----------------------------------

You can find the script.bin decoded here: https://gist.github.com/milankragujevic/15a20c32ca7f0e275f20869e5ccd78bb

Thank you so much!

jankowskib / FELix

Corrupted MBR, can't write anything to NAND #6