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Lenovo Yoga 2 hard reset

Remove unlock pattern remove password on your Lenovo Yoga 2 Android tablet repair using recovery menu
Save everything. Back up all of your data.
Android system recovery <3e> LRX22C.YT2-1050L_USR_S100081_1507241439_WW52_ROW dev-keys
yoga2 rom version

1. Press and hold Volume UP + power buttons together for about 8-10 seconds.
2. In DROIDBOOT PROVISION OS menu screen select RECOVERY option using Volume DOWN or UP key.
3. Press POWER or CAMERA button to confirm.
4. Now you get in recovery factory reset option screen.
5. Use Volume down and highlight Wipe data / Factory reset and confirm using power or camera key.
6. Highlight Yes -- delete all user data and confirm again using power or camera key.
7. After it finishes wiping data press power or cam key to reboot your Lenovo Yoga2 tablet / reboot system now.
lenovo yoga 2 recovery menu

lenovo yoga 2 recovery menu1
the soft way resetting the tablet from the menu:

1. From the Home screen, press the Menu Key and touch Settings.
2. Touch the Backup and reset
3. Touch Factory data reset.
4. Touch Reset tablet.
5. Touch Erase everything.

YOGA Tablet 10 (B8000) YOGA Tablet 10 HD Plus (B8080) YOGA Tablet 2 Pro-1380F YOGA Tablet 2 Pro-1380L YOGA Tablet 2-1050F YOGA Tablet 2-1050L YOGA Tablet 2-830F
YOGA Tablet 2-830L YOGA Tablet 2-830LC YOGA Tablet 8 (B6000)

General advice: Before you buy a new cell phone or new tablet, please try the following procedure to repair your device in a software way. First charge your battery, backup your important data if possible and in most cases take out SIM and SD card before doing factory reset. It is impossible to recover your data after doing a hard reset, so online backup is always important. For all of your data, a backup should be done on an external device, hard drive, raid system or media. With or without insurance, if your cell phone lost, damaged or stolen at least your invaluable data is backed up in a safe place. If you are about to sell your phone and you want to wipe your personal data, or if your phone affected with virus you have to do a hard reset. In some cases, you can delete the forgotten password or lock pattern from your device as well. All information is for devices with stock based ROMs. If you are using rooted device, always back up your EFS folder first, containing your IMEI info, etc.! Please also note, that a hard reset operation will not unlock your mobile phone's SIM lock or network lock, but it will remove the unlock pattern, remove the user password or PIN password (NOT the SIM card's 4 digit PIN code). Also note that the firmware version will not be affected in any way, it will not be downgraded, it will remain the same you are using and if you have rooted your device, root privileges remain also unaffected.