How to down Android software version i.e. from Kitkat to JellyBean Plus My friend has a problem in his Android Samsung Galaxy Grand 2.

He updated his phone. After the successful update to version 4.3, his device was unable to connect to WiFi network, and can't continue past set-up.

The network is disconnecting every 2-3 seconds automatically.

I have no way to downgrade to 4.2 (because without WiFi it takes long time to download updates)

Is there another way I can downgrade to 4.2?


  I had searched very much on Internet for this : I found :
  
  (1) Go to Service center and they will make downward update 4.2
  
  (2) This is manufacturer problem in software updates, so we need to
  update to 4.4 using 3G or 4G connection SIM card, if the update is
  not released then we only have to wait
Usually you can't downgrade your device the "official" way, however you can do it manually:

THIS WILL VOID YOUR WARRANTY!


Go to www.sammobile.com
Then go to firmwares.
Search the right firmware for your device.
Download Odin (do a google search)
Extract Odin.zip
Put the md5/tar in the PA/PDA slot
Click on start/begin/OK.
Wait a few minutes and your will reboot.