Questions : Can the S3 be permanently bricked, or is it safe ? Are there any files left behind after unroot, delete cache and factory reset ? Rooting and installing custom kernel, can my IMEI be lost? And here is an issue i had : I wanted more volume on my SG3 I9300. Rooted with CF-Root-SGS3-v6.4 Somehow managed to overclock to 1800ghz.(had Siyah kernel on pc but did not choose to install in odin.) Got worried. Returned to stock wiping all traces including flash counter. Rooted again, making sure i keept stock kernel. (deleted siyah file) Tried overwriting system/etc/default_gain.conf with a new enhanced file using File Expert. Could not get access even with permissions given in SU and File Expert. I’d very much appreciate some help !