Android stuck in a boot loop

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Hello all together,
I've got a huge problem: My tablet is stuck in a boot loop, it shows the boot animation and the Nvidia tegra logo alternating and does not go beyond it.

And that's what happened:
- I couldn't install OTA2.5 since I deleted some system apps and couldn't restore them with titanium
- so I changed the update-script within the update.zip , so that some patches were neither checked nor applied
- I forgot to delete the commands concerning the install-recovery (that was the mistake)
- so after applying the update via CWR, it started booting, but got stuck.
- I thought I could restore an image with CWR, but during boot, the old android recovery was restored
- I already tried a cache wipe / factory reset, but neither does help to get out of the boot loop

Does anybody have an idea what to do?
here are my ideas:
- write a new update-script to get CWR back (probably won't work since the recovery checks the zip-signature)
- find a way to restore the original lenovo ROM (is there a signed version which I could use?)
- send it to lenovo (do I have any chance that they flash the original rom?)

I'd be really happy if anybody has an idea what to do.
Thanks, lump

I think it could be send to Lenovo.
Just said that you got problem during OTA 2.5 (not enough battery or something else) and you got bootloop.

The problem is in deleting some neccessery apps. Download OTA again from Lenovo server manually and install it with original ie. installed recovery.

Thank you for your advice, I think I will try to send it back to Lenovo.

I already tried installing the OTA2.5 update manually, but it aborts during the assert tests, since some apps are missing.

Does anybody know, if the ICS update will be incremental as the OTA updates before? If not, it might be possible to install it.

You could send a pm to bsnf, Mark_Lenovo, or someotherguy at the Lenovo forums and ask if they would please send you the full system image for your tablet. They might be willing to help, that is your best shot without sending it back.