Can't log into google account or androild market after ICS update

[efranken]

I have a US wifi-only xoom, use it overseas (Panama) and it is stock.

Last saturday I got the ICS update OTA. After the update, many apps didn't work right: i.e. Kobo, Android Market. Others did, i.e. Facebook, browser, etc. Did a soft reboot (power + up vol), but no improvement. Did a factory reset and things got worse. Now I can surf the net and add a hotmail account, but that's it. I can't log into my google account in any way (gmail or account sync), therefore no Android Market. From my computer I log into Android Market and the AM app it says it is not compatible with my device. However all other apps say it is ok.

Help? I don't know what to do. Reinstall ICS (how?)? downgrade to honeycomb? I never had problems like these with honeycomb

Thanks in advance

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