1.init.qcom.post_boot.sh Location system/etc. Add Init'd support by adding this line to the bottom of the script be sure there is a blank space between this line and the bottom of the script.---->>> busybox run-parts /system/etc/init.d/ >>>
2.platform.xml Location system/etc/permissions Add's write to External SdCard
<permission name="android.permission.ACCESS_ALL_EXTERNAL_STORA GE">
<group gid="sdcard_all"/> <--- add this line. thats it.
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For the sake of keeping file system integrity if you post the above files. I will alter and wrap them up in a flashable zip for you. Set permissions as shown. chmod755 rwx, rx, rx