Trying to modify в модем firmware squashfs

Good Day,

гm trying to modify в greenpacket модем firmware. The firmware is в .tar.gz

I was able to extract it and the поля пахал format.txt, initrd, md5.txt, umac, zImage

I extracted the initrd using firmware mod дистрибутив using the unsquashfs-all.sh command.

Then I modified the firmware after that I remade it using

./mksquashfs squashfs-root initrd

Then удар в лунку it back on the folder and compressed it again using tar.gz. But when I uploaded it on the модем an ошибка appeared saying /tmp/image file not совместимый. Хоуп you хан help я. I хан upload the firmware if you want to.