mi pad 4 lte(clover) imei (0)

[tabldotlife]

hi, need fsg, modem1,modem2 partition backup.
my imei is now write0 i have qcn backup and i install it again device is stuck in twrp.
i use in terminal
"dd if=/dev/zero of=/dev/block/mmcblk0p46"
"dd if=/dev/zero of=/dev/block/mmcblk0p47"
"dd if=/dev/zero of=/dev/block/mmcblk0p11"
device open but lost imei.
can help me for backup?