Safari crash, Settings Safari Crash, Safari iCloud freeze

Hi,

I've an iPad2 3G 32GiB running iOS 8.3. And Safari crashes every time I try to access it.

1. After searching the web I figured I should go to settings and reset history and website data.
2. But that doesn't work cause every time I access "Settings -> Safari" the settings app crashes
3. After searching some more I figured I should try disabling iCloud Bookmarks sync: but that doesn't work. It only reports "disabling Safari bookmarks" (or something like that) and freezes in the progress loop. Doesn't finish the process ... I did kill the settings app after 48h with no visible progress.

The device was reset to factory defaults and set as new using a backup from an IPad 1 WiFi. What more can I do?

Thank you!