Question

Which is the best third party tool for flashing ios device other than itunes?

Answer 1

DFU tool that can be a bit complex to use but can do a bit more than just enter the DFU mode? Although Tiny Umbrella has a number of functions and this is not its primary function, it performs this function admirably well. It can be used to exit recovery mode, or to get the iPhone or iPad to get out of a stuck reboot loop.

merits:

1. You can fix the problem with the help of just one button.
2. It has other features too, making it a multi functionality application.

demerits:

1. Does not recognize the device sometimes.

others options are :- 

i. iReb

ii. RedSn0w

iii. Recboot

iv. 

Answer 2

You can use the 3u tools. it  provides two ways, Easy Mode or Professional Mode. You just have to make your selection and apply.