[Q] HELP! installed wrong ROM

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http://forum.xda-developers.com – Hi Guys I hope someone can helpout. I followed a complete guide to install the latest cyanogenmod nightly ICS on my tab. however for some (stupid) reason I accidentally downloaded and installed a ROM for the Galaxy tab 10.1 wifi and not the Galaxy tab 10.1 3G. The result is that I can't use 3G and the tab won't let me install any other ROM version (tried different Cyanogenmod versions and the Kang ones). I'm getting the following message: assert failed: getprop("ro.product.device") == "p4" ll getprop("ro.build.product") == "p4" E: error in /sdc (HowTos)