@PeterBr: You forgot the 'remove the linkss folder manually', which was sneakily the whole point of the process
.
(That, and you don't need to touch Python at all).
And, yep, if your JailBreak was broken, the update process would fail with a U007 error.
Plus, you didn't really answer my 'describe the screensaver' question. That you appear to be speaking of a single image smells like Waterstones...