Help getting iphone 4s out of recovery mode as i keep getting error 1611 or error 21.

Question

can anyone help (with ways to fix this issue other than the 1's ive already tred) I was charging my phone and when i went to get off off charge it was dead and only displayed the itunes connect image. I have tried to restore it and when i connect it to itunes it displays this message 'itunes has detected an iphone in recovery mode. you must restore ths iphone before it can be used with itunes' so i tried to restore it may times now but get so far and then have an error message. Ive had error 1611, error 21 error 1611 again and error 21 a further 4 times. I have also been to the apple store and made an appointment with the so called geniuis people however after 4 and a half hours waiting to be seen did they take my phone out the back then over 15 mins later the chap dealing with me came back saying ' WHEN DID YOU HAVE A NEW SCREEN FITTED' I replied 2/3 months ago as i dropped it on my table and the screen cracked so i took it to a phone repair shop and paid £105 to have it replaced and my phone was working fine after I wasnt aware that the warranty covered you for a cracked screen that you was caused because you dropped it accedentaly etc.... well any way tghe chap then said ' I can t help you any further as you need to go back to the shop who changed the screen and get them to resolve this isssue. I asked how on earth can a new sceen fitted cause my phone to go in to recovry mode (2/3 months after the screen was replaced mind) the reply i got was ' Its not my issue its out of my hands........' I was more than tamping, raging fuming leaving there as no advice was given to rectifiy the issue i have with my phone. The following morning i went straight to the shop that replaired/replaced my cracked screen and told them what apple had said to me and that i was to come back to yourselves as you need to rectify the issue? to say the repair guy was baffled is an understatement but in fairness at least he tried to help me and attempted to restore it on itunes 6 times in total and changed the battery to a brnd new 1 plus checked the charging port to make sure this was not faulty. after all his help he was still baffled as to why apple felt its his fault after replacing a cracked screen as the error codes being displayed clearly were a software issue not an issue caused by replacing the crakced sceen'
I was more than happy to pay apple and charges to fix my phone based on the fact my warranty was now null and void (which is pathetic as the replacement screen was an apple origianl replacement screen it was just fitted by someone else whom is qualifed to do so) but wasnt even given the option to pay for any repairs etc.....they simply blamed someone else and offer me no further help.
so a week later after this first hapen to my phone whilst on charge and i still in the same boat and have run out of things to try (which was all found by using google as apple support secton is a load of fresh air and doenst actually give you the info and help your need.
Im grateful of any help that can be offered.

Answer 1

You must be a Windows sufferer.
http://support.apple.com/kb/TS3694#error1611
This error typically occur when security software interferes with the restore and update process. FollowTroubleshooting security software issues to resolve this issue. In rare cases, this error may be a hardware issue. If the errors persist on another computer, the device may need service.
http://support.apple.com/kb/TS3694#error21
These errors typically occur when security software interferes with the restore and update process. FollowTroubleshooting security software issues to resolve this issue. In rare cases, these errors may be a hardware issue. If the errors persist on another computer, the device may need service.
Also, check your hosts file to verify that it's not blocking iTunes from communicating with the update server. See iTunes: Advanced iTunes Store troubleshooting—follow steps under the heading Blocked by configuration (Mac OS X / Windows) > Rebuild network information > Mac OS X > The hosts file may also be blocking the iTunes Store. If you have software used to perform unauthorized modifications to the iOS device, uninstall this software prior to editing the hosts file to prevent that software from automatically modifying the hosts file again on restart.