+Matteo Pietro Dazzi
No, 4.1 leaks for N7000/I9100/etc are of no use. The Mali/EGL blobs used by +Samsung Mobile
in their releases have a totally different architecture from ones that work with opensource libraries. For example, GRALLOC_USAGE_HW_FIMC1 somehow works on devices that don't have any FIMC1 memory reserved (dafuq?) with blob gralloc, and if you use opensource gralloc with Mobile's Mali/EGL, GRALLOC_USAGE_HW_FIMC1 causes the EGL libraries to derp hard.
We're stuck with ancient Mali/EGL from Insignal that provides all sorts of weird graphics corruption. The Insignal release is a pretty big failure - development boards don't have to deal with carrier approval or wireless certification, so they should always be ahead of handset/tablet official releases - this is the case with TI's dev boards (like PandaBoard) and Qualcomm's dev boards/reference source. Insignal (Samsung's dev board provider) is, however still working on trying to finish ICS more than two months after Mobile shipped JB to a handset.