Yes you can downgrade but this has to be done manually - Please find a very detailed list of firmwares here - Instructions can be found here
or you can use this guide here - Ignore the title as it's the process you need to follow, simply download the .ftf file from the 1st link and substitute it as per point 5
Yes you can downgrade but this has to be done manually - Please find a very detailed list of firmwares here - Instructions can be found here
or you can use this guide here - Ignore the title as it's the process you need to follow, simply download the .ftf file from the 1st link and substitute it as per point 5
I wouldn't like to say - Some say yes some say no - Now as you don't need to unlock your bootloader to flash and if you flash the firmware that is applicable to your phone ie: what it came with due to country etc then you should be fine - It's not like other phone manufactures which have a flash counter
Do you know your customization number - Dial *#*#7378423#*#* then navigate to Service info then software info and half way down you'll see the number - Post back
If you downloaded and flashed this C6903 14.3.A.0.681 Generic ID 1276-7951_R3C then you have flashed 4.4.2 - Anything that has .681 is KitKat so for the latest release of JB download a firmware with .136
