[Q] Problems updating to JB for S3 on stock ROM

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http://forum.xda-developers.com – Ok, so i got my stock ROM with rooted, and CWM recovery on my phone. When I started the update process, CWM asks me to install untrust zip file; then an error comes up: E: Error in cache/fota/update.zip (Status 7) Installation aborted I have done this twice and the same error comes up. Can somebody let me know what is wrong? Do i have to unrooted and install original recovery? Please let me know. Thank you (HowTos)