Is it possible to jailbreak iOS 6.1.3 on iPhone 4S?

Is it possible to do so?
I have googled it and i don't know who to trust, some sites say it can't be done, some say it can be semi tethered where when the phone is rebooted only official iphone apps will work until you connect to pc.

I have jailbroken before, id prefer if it was an untethered jailbreak!

Just like a definite answer and a website if possible, Cheers!

How to unblock an iphone 4s? - 2

Basically i have a lost iphone 4s and i want to unblock it, its been lost for probably a year maybe i dunno i tired this method
here is also how to put it on dfu mode:
1. Connect your iPod touch/iPhone to your computer with the USB cable. (make sure iPod/iPhone is on)
2. Hold both power and home buttons at the same time and count to 10 (1 onethousand 2 onethousand etc. )
3. Let go of the Power button, continue to hold the home button until the iPod/iPhone connects back to iTunes.
Be patient it can take some time. Sometimes while holding the home button it can take up to 15-20 seconds.

and it said it can't connect to the iphone sever something like that and now it isn't switching on:/
what the hell is happening can someone please help me

Is it possible to fix an iphone 4s which have been submerged into water?

I dropped my Iphone 4s into the toilet bowl recently. I did quickly fished it out in less than 5 seconds but i tried to test and use it for a while and a few minutes later it shut down on its own. The next morning i send it for repair. It has been 4 days since i send it for repair. Is it possible to save it? I'm really worried, if you send it for water repair does it usually take so long?

ITunes syncing help. So ANNOYING?

Just to add one ebook to iBooks on my iPhone, iTunes backs up and syncs EVERYTHING. Why can't it just simply transfer the single file. Is there a way to stop it from doing this. Please help. I have so many apps and pictures that to put one ebook on my phone it takes half an hour.