Have you downloaded Samsung Kies? If you have SK on your computer you can back up very simply.

The wi-fi version is what seems to give most people a problem but I connect my S2 using a usb cable and it's superb.

I do it this way. Open Samsung Kies on your PC then plug in your S2. Your S2 will tell you that it's connected and you'll see it appear on the Kies' screen.

Choose the Backup/Restore option along the top of the screen and tick the boxes for whatever you want to back up (presumably the lot).

The back up files are stored in MY Documents/Samsung and it pays to delete old ones occasionally as you'll end up with a few large files.

Connecting to SK also keeps your firmware updated as it recognises your version and tells you if an update is available.

 

homer - you're the lucky one I think, the cast majority have no end of problems with kies especially via USB

UP - this link should give you some options: http://androidforums.com/samsung-galaxy-s2/408055-pc-suite-use.html

 

I also use Kies via USB cable and it works perfectly. Also keeps my data synced with Outlook without a flaw.

Many people hates Kies but it has worked perfectly for me

 

Yeah I'd use KIES for backing up personally.

 

many people have no problem backing up via kies, but unfortunately, the most important part - restoring - is not that hassle-free, and it often does a poor job of restoring. which makes it pretty pointless..

to answer ur question, to use titanium backup, u need to have a rooted phone. u do not need an sd card to use it, it'll back up to ur phone's usb storage. even if something goes wrong flashing a rom or rooting, this part of ur memory will remain fine, so dont worry. if u really want, u can just copy the 'titanium backup' folder from ur phone to ur PC via USB each time u do a back up

to root, follow this guide: http://forum.xda-developers.com/showthread.php?t=1103399

super easy, should have u rooted in less than 5min. im afraid there's no way u can install titnaium backup and do a backup before this, so u might wanna try Kies. although i can almost assure u, follow the instructions and nothing will go wrong

if uwant to flash a new firmware, without waiting forever for kies to get it, go here
[ROM + Guide]Official i9100 Firmwares KF1/2/3/4/, KG1/2/3/5/6/7, KH1/2/3 Download - xda-developers

XXKG5 (OXA Poland) is the newest official, and its great in terms of battery life, and u wont find any heating either. go for it. after this, u will lose root, so u will have to root again, via the first link i posted.

follow the instructions and u shouldnt lose any data. good luck!

 

hmm, wifi shouldnt be scanning once its connected. it only scans if ur signal is weak, i think.. not sure about this, but using wifi in general will defintely eat more battery but it shouldnt be a major drain. freezing unused apps makes a huge difference in battery life, i highly recommend u follow that root link i sent u and root ur phone. u just have to flash the KG5 CF root kernel now.

btw, if ur seeing high usage of Maps on ur battery, u might wanna sign out of latitude, instead of freezing Maps.. i use maps often and i wouldnt wanna freeze it. if u sign out of latitude, u should not see Maps using much battery

go ahead n root, then u'll be able to do the backup that u wanted initially too

 

Kies backed up my phone perfectly. I kept regular backups and had about 6 when I had to reset my phone.

Not a single one of those backups would restore when I needed it. Every single version I had failed.

I would say don't trust Kies unless you've tested it in some way and can be quite certain the restore will work.