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This question already has an answer here:

I'm trying to log-in to my tablet, which I haven't been on in about 2 months. I can't remember my PIN. It's not giving me a chance to log-in with my Google account, so I don't know what to do.

marked as duplicate by eldarerathis Dec 16 '14 at 1:33

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Instructions:-

  1. Download Aroma File Manager latest version
  2. Place it in the root of your sdcard(Preferred)
  3. Reboot into recovery

4. For CWM:

Mount all partitions (including sd-ext if you have it)

And flash Aroma File Manager from sdcard

For stock recovery:

In stock recovery, there is no option to mount partitions, so

Flash Aroma File Manager, Click on menu option and go to settings 

Select Mount All Partitions 

Now, exit from Aroma File Manager and reflash it. 

Now, you will see each partition is mounted 5. Now, go to /data/system

Note : If you have sd-ext mod to increase internal storage, go to /sd-ext/system/ 6. Now, If you have to remove pattern lock, long press and delete gesture.key

If you want to remove password, delete password.key If you want to remove gesture, delete gesture.key

  1. Exit the Aroma File Manager
  2. Reboot 
  • I read that Aroma does not work on stock recovery. Does it? – ADTC Apr 26 '15 at 16:39
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If you have not rooted your tablet just hard reset it.

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    I don't think it matters if you are rooted or not. You can do a factory restore either way. – krikara Jul 8 '14 at 6:02

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