My iPhone 4S won't let me install iOS 5.1?

Alright, so I tried installing the update both on my iPhone and laptop and both didn't work… Like, it downloads but then when it's like 30% it just stops and gives me this error that the installation couldn't be completed. On my iPhone it shows a window that says " Error downloading iOS 5.1"…

I also faced this problem with my old iPhone 4… And I've tried using different Wi-Fi connections (at my friend's, at home, at work… )

What could be the cause of such a problem?

Any help would be highly appreciated.

Note: MY PHONE IS NOT JAILBROKEN.

Is there an inexpensive way to develop an app?

I'm a college student with a few ideas for iPhone apps that I would like to release. The only problem is that the cost for developing one seems to be a little on the high side for me and is money I don't really have at the moment (I have less than $500 saved up). Does anyone have any recommendations on what would be the most inexpensive way to develop a quality app for IPhones and Android devices?

How to restore purchased music on itunes?

Yesterday I scyned my iphone with itunes on my computer. On the phone were a large number of purchased albums. The computer sent a message "insufficient memory, itune will synce whatever possible" (or something like that). I clicked ok, thinking whatever couldnt be transferrred would be left on the phone. What i'm left with is roughly half the tracks on each album and no ringtones!

I have cleared plenty of memory on computer and tried to transfer again but all missing data seems to be lost. It is not in re-cycle bin and I have tried to repurchase one album (as you can with deleted purchased apps) but no good.

Half the album is better than nothing, but to be fair I have purchased all the albums! Have I messed up or can anyone help?

How to install iPhone themes from PC, to iPhone?

Sorry, I'm new to jailbroken stuff!
My iPhone 4 is Jailbroken. I downloaded/saved and extracted this theme; http://www.mbtheme.com/Iphone_theme/Rilakkuma_84976.html
I'm looking up tutorials, and they say to get 'BSD subsystem' from 'installer' which is downloaded when you download 'Jailbreak.me' … Well i downloaded Jailbreak.me, it didn't come with 'Installer' and I can't find it in Cydia.
To be specific, this is the tutorial i found:
3. Now if you still want to move them from your computer to your iphone, see below.

4.install BSD subsystem (from list of apps available from Installer)

5.install OpenSSH. Once installed and having access to your Wi-Fi get your iphones IP address from Settings->Wi-Fi->click the arrow next to the Wi-Fi network you are connected to.you'll then see your IP address.

6. SSH into your phone.ssh -l root 10.x.x.x (use your ip address). If using a mac just use the Terminal app to ssh. If windows, i don't know find a terminal type app to command line to use ssh.

7. Use password "dottie" or "alpine" when asked after ssh'ing into your phone.

8. Get a SFTP program to transfer files to your iphone from your computer.server will be your IP address of your iphone, user = root, password = dottie or alpine.

9. Summerboard themes are in Library/SummerBoard/Themes/, this is the directory you'll place your themes.each theme should have it's own folder.

Why do i keep crying for pathetic reasons?

A few nights ago i was at a pool party and i got pushed in the pool with my iphone which is now broken. I'm also having a few problems with friends at the moment. Its now been 4 days and i haven't stopped crying over stupid things. I watched tv and one of the actors who was brunette dyed his hair blonde and i thought it looked horrible so started crying, i also started crying when my favourite contestant in a reality show got kicked out, i also started crying when my brother made himself food and didn't ask me if i wanted anything. I know these are all really pathetic but i haven't stopped crying and i don't know what to do? I have been hoping i will feel better but i'm just not

How to get the newest Instagram on my iPhone 3G?

I was on my friends iPhone4 and she had all these cute filters on instagram but I have the iPhone3G and when I downloaded instagram, I had all the old ones with the borders, and it wasn't that many! Is there any way I can get the new ones, or update it?

Games no longer iTunes App Store?

I used to have some games on my old iPhone. Now when i search for these games in the iTunes App Store to put on my iPod Touch & iPad, they no longer seem to be on the app store.

The games are:
Yard Sale Hidden Treasures Sunnyville
Jim and Frank Mysteries

Has anyone else had this same problem. Is there any other way of getting these games back (without having to Jailbreak).

Why aren't some some albums showing up on my iphone is albums?

So I dowloded some songs off youbute via ix converter and I put them on my iphone and I put in the name and artist and album and stuff but when I went onto my phone they weren't in albums I searched it and it came up and artist unknown and album unknown so I put it back into my poota and it had the artist and stuff on it on there so I took it out and searched them again and it came up again as unknown! I'v done this before with songs why isn't it working now! (use simple words I'm 14)

How to download apps on an iPhone 4?

I want to download free apps, but it won't let me because the credit card on my account is deactivated. It always says "sign in required for payment information" or something along those lines, even though the app I'm trying to download is free.

How can I get around this?

Why is YouTube slow on my iPhone?

On my iPhone the YouTube app is slow for loading the video so the video stops playing and I have fast Internet like 15 Mbps how do I fix it