Please note: this is for community portal Backups

Most backups are saved in the download folder, if your backup is elsewhere,
just browse to where you saved it

1. Open ES FILE EXPLORER and browse to where your backup is,it is usually found by clicking LOCAL>DOWNLOAD>COMMUNITY BUILDS>MY BUILDS

2. Do a long press until your backup ticks and at bottom right click RENAME

3. Rename it whatever you want to, put an underscore _ between words and make sure it ends with .zip then click OK

NOTE: this works great for community portal backups which by default names your backup my_full_backup.zip

IMPORTANT: The USB/SDCARD Wizard  will only work with its default backup name backup.zip so do not rename it

Your backup is now renamed.