How to restore from Titanium Backup with file on computer? I flashed new firmware and before doing so backed up apps and data with Titanium Backup. How do I restore? I have the folder on my PC which contains two .gz files and a properties file.
It's simple. Copy from PC the entire folder on your external SD or internal storage and name the folder as you wish


Use the Detect option on TiBu


Preferences &rarr; Folder Location  &rarr; Detect &rarr; All

Select location, click Use Current ( where current is the folder you have copied )


How to restore your backups on a new phone, or after installing a ROM (if you wiped your phone



  
  Click the Backup/Restore tab
  Click Menu (the button), Batch
  Click “Restore all missing apps + system data”
  Reboot your phone
  


Caution: If you are restoring on identical device with same ROM step 2 is fine. 

For Restoration on other devices , other ROMs/ upgrades (as in your case), doing this will cause serious problems as


What is user app on one ROM may be a system app on another
ROMs may be "cooked" differently so replacing a system app from different ROM can cause serious problems
Apps that are device specific e.g., Samsung Planner will not work on a Moto device


In this case, choose Restore all apps with data and a menu shows up, where you can de-select what you don't want to restore (like the first few in picture below)