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For a S60 3rd FP1 device like your E63 provided that you used "Backup phone memory" to memory card and most of applications installed upon memory card would have been easily recoverable after "hard reset", although there would be some strange alphanumeric titles at top of installed applications requiring re-installation; it wasn't a particularly good time to chosse to re-format memory card.
You need OviStore_31_prdSrv_1_22_015_18376.sisx which is the same for a number of S60 3rd FP1 devices.
Anyways where can I find the sisx you mentioned?
Perhaps "Google" for OviStore_31_prdSrv_1_22_015.sisx?