There was a request a use of my freeware application, Screenshot for Symbian OS, to include backup/restore feature. This will be a useful feature for a user who updates his firmware regularly. As you may know, updating firmware using Nokia Software Updater currently removes user’s applications and data on the phone.

There are two good articles that discuss how to support backup/restore on our applications, i.e.:

After reading those two articles, I added backup/restore support to my application. Guess what, it didn’t work. PC Suite has reported that my application has been backed up (see screenshot below). However, when I restore the backup, my application is not restored back to the phone.

Backup/restore using Nokia PC Suite

 

What’s wrong? After playing around with the installer file for one full day, I got an answer. Backup/Restore simply doesn’t work with developer certificate from Symbian Signed. The backup/restore works with other certificates, including self-signed certificate.

This problem has been confirmed by Symbian. You can visit Symbian forum discussion to read more detail information. What is the solution? Nothing. What I am going to do now is submit my application to Symbian Signed with backup/restore. Let’s hope the best that everything works.

Stay tune… as usual, we have to wait 2-3 weeks before Symbian sign a freeware application…. :(