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Thursday, December 13, 2012

Galaxy S2 Black Box or Black Rectangle or Screen Lock Issue



To fix scrren lock issue, black box or black rectangle on desktop do the following:

 Tools Needed: (download from playstore)
1. Hex Editor
2. Root Explorer
Steps to restore:
1. Using root explorer locate the /efs/imei/ folder. In that folder there should be a file called keystr. In my case the file was missing which is why the lock screen was missing and was causing my problems.
2. using root explorer create a new file called keystr
3. also in root explorer open the file keystr in text editor and type ON
4. now go into hex editor and locate the /efs/imei/keystr file.
5. using hex editor the first two values in green should be 4f and 4e. all others should be 00.
6. make sure you save the file.
7. reboot.

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