I am trying to backup my FP2 data on my computer (Windows 8) with MyPhoneExplorer using an USB connection (in order to avoid Google Play).
Sadly MPE doesn’t seem to recognize the FP.
On their website MPE doesn’t specifically list FP among the supported devices, but browsing through this forum I get the impression many people use it successfully.
You can just export them to the internal storage, there are a couple of apps that can to this (for SMS e.g. “SMS backup + restore”, for contacts I think even the default app can do this, so you don’t need MyPhoneExplorer at all (unless there’s something you didn’t mention of course)
Did you install and start the MyPhoneExplorer Client App on the phone?
Apart from the Play Store you can find the APK in the PC install EXE … just open the EXE file with e.g. 7Zip and extract mpeclient.apk out of it.
… you could just copy it to the phone with the file explorer on the PC and then try to install it with a file explorer on the phone … which might need enabling Apps from unknown sources depending on your phone’s setup.
(Or did you mean PTP, which would be for photos only?)
Else, after …
… you could use the command line to install the APK with adb install mpeclient.apk
assuming adb.exe is available from the path in which you operate the command line, and mpeclient.apk resides in the path in which you operate the command line, else you would have to give the full paths instead, e.g. c:\wherever_adb.exe_is\adb install c:\wherever_mpeclient.apk_is\mpeclient.apk