mobile

Hi the community,

I had the HTC Desire Bravo during few years but have recently changed for a Z3C,

I saw the Andoid 5 update, but before updating I am wondering if it's possible to do like a nandroid backup / recovery backup without rooting the phone or something like that,
I do need my phone because I am oversea and don't want to take any risk at the moment,

I never had any problem with the HTC Desire Bravo while installing ROMS etc but for the Z3C I don't feel confident and really don't want to brick it,

Is Titanium Backup app or something like that could be good ? (I saw that for this app the phone has to be rooted...)

Thank you in advance for your answer,

Croquar