We're aware that a number of people are experiencing problems upgrading their iPhones to the iOS 4. Problems range from the upgrade process appearing to stall, to some users reporting partial or total data loss.
iPhone Backup Extractor fully supports iOS 4, and if you're one of those unlucky enough to encounter problems, we've got some tips.
Firstly, if you suspect you have lost data, do not sync your iPhone with iTunes just yet. If you do, you run the risk that iTunes will overwrite any previous backup files you may have with fresh backups, which will no longer contain your missing data. Instead, browse to your iTunes backup folder and take a copy of any files or folders you may find there and save them into a completely separate location.
Secondly, try restoring your iPhone. This seems to have resolved many issues, albeit not all of them. As mentioned above, make sure you've copied any iTunes backup files to a safe location before you try this.
Thirdly, if the restore didn't work or you are still missing data, download and run iPhone Backup Extractor. The free version will allow you to locate and restore individual files from within an iPhone or iPad backup file - just point it at the backup files you copied to a safe place in the first step.
If you get stuck or need help, please reach out to us.