Restoring

I am getting this error while restoring 2 of my different backups- Cannot restore because the backup was corrupt.

NOW, there's already a same question here but everyone said they updated their phone and it solved the problem, i have checked both my phone and itunes, they ARE up to date, so its not a problem of that, and

2) i only have one device in which i do backup and restore if it ever formats, now it's formatted thanks to another problem of storage full and bootloop issue, but in short i only have the backups and cannot create a new backup, not restoring from one phone to another but in the same phone.

i have tried 2 different backups and tried different cables and ports too,none helped so far