Well, i followed these steps, now the TPT is not boot-looping anymore, instead it stays at the lenovo screen...
i also did a full-wipe, wiped cache, re-installed the ICS update, rebootet, re-done your 4 steps, doesn't change... my only hope would be to be able to install CWM using stock recovery and re-flash it with a nandroid backup...
but as far as i know there's no cwm for ics yet... so any other ideas?
and another side-question: is the TPT charging while in (stock) recovery?
SG S - I9000 @ CM9 nightly
SG SII - I9100 @ CM9 nightly
SG Note - N7000 @ CM9 nightly (yes, i like CM9
SG SIII - I9300 @ CM9 nightly
ThinkPad Tablet 32GB UMTS @ OTA3 (ICS) boot-loop