Since the update my iPhone 3G version 3.1.3 to iOS 4 I met numerous delays and jerks, especially in games. As few new features granted to the iPhone 3G are not essential to me, I decided to do a downgrade to version 3.1.3 which, without being complicated, however, calls to follow the instructions.

la mise à jour vers iOS 4. Warning: This method does not work without data loss in case you have a backup of your iPhone made ​​before the upgrade to iOS 4. If you have a backup made after you get an iPhone reset and then you will lose data, such as SMS for example.

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Following the sudden and simultaneous death of two of the three hard drives connected in RAID 5 on my server SQLServer 2000 (as what is possible), I had to urgently rebuild a new server. As a reminder you can lose a hard drive in a RAID 5 without losing data, beyond you lose everything ... I detail here the steps I followed to fully restore the data.

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