i have read that topic but i dont see if squashfs is synct or not. The output of the unsquashfs -v
unsquashfs version 4.5 (2021/07/22)
copyright © 2021 Phillip Lougher phillip@squashfs.org.uk
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2,
or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
And the solution in this topic is not clear for me