How to restore a Helium backup? I am transfering to a new phone, and I backed up my stuff using helium to Dropbox. Later I copied that folder to carbon folder on my sdcard, but helium doesnt seem to detect it. Any idea how I can restore that? It looks like the format is different.. Regular backup seems to be carbon/com.appname/files but in my dropbox backup, its only files, no folders at all.
There are multiple ways you can achieve this:

On the device


Start Helium
pick any "dummy app" to create a backup from
Exit Helium
Check where it placed the backup files, and which files those are (a backup consists of multiple files)
Copy your backup files to that location
Check if for each app there are all the files you've checked above1
Start Helium again, it now should find the backups
Restore whatever you wanted to restore


If the "old phone" is still up and running

The app is called "Helium App Sync and Backup". So when you go to its Restore and Sync tab, you should be able to transfer and restore the backups across the devices. I've never tried that, so I cannot give any details on it.

Using your computer

Helium Backup uses the same file format as ADB (in fact, it uses ADB locally to create and restore backups). So with the backup files on your computer, and the device connected via USB with usb-debugging enabled, you could simply restore the backups from the command line. Just pick the .ab files for that, and run

adb restore com.foobar.ab


(of course, you've got to replace com.foobar.ab by the real file names). See Is there a minimal installation of ADB? if you didn't set up your computer for use with ADB yet. The downloads mentioned there can also be found here.



1: I rawly remember from a while ago that Helium might "ignore" a backup when one of those files were missing