So in order ro do this i need to first back up my CM7. Then flash the update. Zip which will boot into cyanoboot from which i can apply the recovery file for cm9? If theres any other steps than that please specify, i need a lil help with this dont wanna brick/mess up my tab. Especially with the new cm7 build coming.
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Backup CM7 with nandroid backup and flash your CM9.zip file from CWM recovery. Cyanoboot will boot from eemc first, where there is your new CM9. If you want to dual boot you have to install CM7 on SD (read instructions for this, I didn't it).