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A new 4.2.2 official firmware update for unbranded Samsung Galaxy Tab 2 7-inch GT-P3100 with build number P3100XWDMI1 which is now based on Android 4.2.2 Jelly Bean version. This update is released in select European countries so far, including Germany, Portugal, Czech Republic, Hungary, and among others. Though there was already several 4.2.2 released  like the P3100XXDMG6 in France and several carrier providers in Europe, but this update might seems to have more improvements and enhancements included.

Some features the improvements in this new update: 
- Buttery Smooth Performance & Great Stability (With Butter Project)
- Full UI Revamp (same user interface as the Galaxy S III and Galaxy Note II)
- TouchWiz UX Nature
- Samsung S Cloud
- Camera functions improved
- New Lockscreen with many customization options
- New functions such as direct dialing, Smart Stay and Pop-up Play
- New Widgets (from Galaxy S III)
- 2 home screen mode
- New notification bar
- Google Now

How to root P3100XWDMI1? You can easily root using CF-Auto Root.

This quick guide is for advance users only – those who has rooted and installed with modified firmware on their Galaxy Tab 2 7.0 GT-P3100 and having issues updating via OTA or Kies. Ordinary users may only update via OTA or Kies and do not use this method, for your Galaxy Tab 2 still runs with official firmware and you can simply update  thru Kies or Over the Air without facing any issues.

- Make sure the battery is fully charge
- Make a back-up copy of all important files stored from your device.
- If you came from custom ROM and wants to restore back your Galaxy Tab 2 to completely stock, perform wipe data via custom recovery first to avoid bootloop issues.
- If you installed Samsung’s Kies software, make sure it is closed and not running on system tray.
- Use the supplied USB cable of your Galaxy Tab 2, failures in flashing is caused by a bad USB cable.
- Make a note of the APN setting of your network data provider.

Grab Odin3_v3.07 download
Install the USB Driver: download

Download the original P3100XWDMI1 stock firmware:
Czech Republic – P3100XWDMI1_P3100XEZDMJ1_XEZ.zip link1 link2
Germany – P3100XWDMI1_P3100DBTDMJ2_DBT.zip link1 link2
Hungary – P3100XWDMI1_P3100XEHDMJ1_XEH.zip link1 link2
Potugal – P3100XWDMI1_P3100TPHDMJ1_TPH.zip link1 link2
Romania – P3100XWDMI1_P3100COADMJ1_COA.zip link1 link2
Slovenia – P3100XWDMI1_P3100MOTDMJ1_MOT.zip link1 link2
Slovakia – P3100XWDMI1_P3100XSKDMJ1_XSK.zip link1 link2
Switzerland – P3100XWDMI1_P3100AUTDMK1_AUT.zip link1 link2

Other 4.2.2 firmware
France – P3100XXDMG6_P3100OXADMG6_XEF.zip link
Vodafone
Greece – P3100BUDMJ1_P3100VFGDMJ1_VGR.zip link1 link2
Germany – P3100BUDMJ1_P3100VFGDMJ1_VD2.zip link1 link2
Hungary - P3100BUDMJ1_P3100VFGDMJ1_VDH.zip link1 link2
Italy – P3100BUDMJ1_P3100VFGDMJ1_OMN.zip link1 link2
Romania – P3100BUDMJ1_P3100VFGDMJ1_CNX.zip link1 link2
Spain – P3100BUDMJ1_P3100VFGDMJ1_ATL.zip link1 link2
Slovenia – P3100BUDMJ1_P3100VFGDMJ1_SIM.zip link1 link2
United Kingdom – P3100BUDMJ1_P3100VFGDMJ1_VOD.zip link1 link2

1. Extract or “unzip” the downloaded firmware.
2. Set the Galaxy Tab 2 into Download Mode
Turn it off, then press and hold down the “Power and Volume DOWN ” buttons at the same time. Press the “Volume UP” to get into download mode. Don’t connect the tablet into the computer yet.
3. Extract and Run Odin flasher tool.
4. In Odin’s checkboxes options, DO NOT Check the “Re-partition”, just leave “Auto-Reboot and F-Reset Time” mark checked.
5. In Odin, click the PDA button. Select the extracted stock firmware.
example: Kies_Home_P3100XWDMI1_P3100DBTDMJ2.tar.md5.

6. Plug the tablet to PC USB connection. In Odin, under ID:COM will turn to yellow andshows the current com port you Galaxy Tab 2 connected to. If you don’t see this and Odindoesn’t responds it means the device is not connected yet, just try another USB port or USB cable.
7. Click the START button.
8. Wait until it’s finishes flashing. Once it’s done, the tablet will just reboot.

If you have something to mention, just drop it on the comment form. Enjoy!

Restore the APN settings of your device, to get rid of  data connection issues.

Change the default language and text input according to your own prepared language  (All European languages are included on this firmware).

Optional: Perform factory reset to gain a fresher firmware installation.

That’s it! You Samsung Galaxy Tab 2 P3100 should now run on latest Android 4.2.2 Jelly bean build P3100XWDMI1.