Step-by-step restore iOS5.0.1 WITH SHSH

Had just restored my iPhone 4 GSM to iOS5.0.1 two days ago. Was confusing what to do to restore to iOS 5.0.1 which Apple had stopped signing (and they had implemented new APTicket method for restoring process), luckily I found this FAQ and it provides complete step-by-step guide to restore. Just to share here in case anyone needs it.
Source:  http://www.jailbreakqa.com/questions/32462/frequently-asked-questions#94647

How do I restore (downgrade/upgrade) my device to iOS 5.0.1 or other non-latest iOS versions?

Since Apple has introduced an APTicket/APNonce check for restores to iOS 5, the TinyUmbrella TSS Server procedure does not work anymore when restoring to any version of iOS 5.x (you can still use that procedure for restoring to iOS 4.x if you want, but the following stitching procedure should work too). Instead, you need to create and restore to a custom IPSW (custom firmware file) with stitched SHSH blobs. (If you're lucky enough to have an old-bootrom iPhone 3GS, you don't need SHSH blobs and can go through this process without doing the stitching steps.)
To successfully restore to iOS 5.0.1, you must have iOS 5.0.1 SHSH blobs saved for this device in your computer (what are SHSH blobs and why are they necessary?). If your device was previously jailbroken, Cydia may have been able to automatically save iOS 5.0.1 SHSH blobs for your device. You can try retrieving SHSH from Cydia's servers by running TinyUmbrella, plugging your device into your computer, clicking the "Advanced" tab, checking "Request SHSH from Cydia", noting where the SHSH will be saved in "Save SHSH Folder", unchecking "Set Host File to Cydia on Exit", and then clicking "Save SHSH" at top right. Verify that your 5.0.1 SHSH blobs are saved (in the General tab) and close TinyUmbrella before proceeding. (If you're interested in restoring to a non-latest version of iOS other than 5.0.1, mentally replace 5.0.1 with your desired iOS version number and follow the same instructions.)

Jailbreak/Unlock/iOS information

Repost from: Dev-Team Blog  by dhlizard

---

Miscellaneous

1) There is no jailbreak (yet) for A5 processor devices (iPad2 & iPhone 4S). It is being worked on. It will be released when it is complete, and tested.

2) There is no untethered jailbreak for iOS5 yet (except for old bootrom 3GS which will always be untethered when Redsn0w is used)

3) Ultrasn0w is not (yet) compatible with 5.0.1

Network bug in iOS5?

After few weeks updated to iOS5.0, some weird things start to happen on my iPhone. The cellular network became unstable, and once the network is lost, it became forever No Service. Open Settings app and perform manual search for carrier, it will search forever and never get any result. The only solution to this is to restart the device. 

iOS 5.0 released

The long awaited iOS 5.0 had finally been officially released.
Update your iTunes to latest version (10.5), connect your iDevice, hit Help > Check for Updates and you're good to go!

In case the download in iTunes is not stable, you may use below direct download links. All links are directly from Apple download server.

Set up Hotmail on iPhone

Here are the steps to setup Hotmail to sync and push to your iPhone (this works on the iPad too):

1. Launch Settings
2. Tap on “Mail, Contacts, Calendars”
3. Tap onto “Add Account”
4. Select “Microsoft Exchange”
5. Enter your full Hotmail email address into both the Email and Username fields
6. Leave Domain blank
7. Enter your password
8. Enter your prefer Description
9. Tap onto “Next”
10. Now you must enter the server, use “m.hotmail.com” for the Server name then tap onto “Next”
11. The iPhone will now verify that your Hotmail information is entered correctly, the next screen you’ll be able to enable Mail, Contacts, and Calendars

Source: http://osxdaily.com/2010/08/30/use-hotmail-on-the-iphone/

Cydia error: running sub-process /usr/bin/dpkg returned an error code (2)

In certain cases when you installing apps on Cydia you might get following error:

Error: running sub-process /usr/bin/dpkg returned an error code (2)

This error message appears to be related to some file corruption in your Cydia.
To fix it, follow these steps:

1. Navigate to /var/lib/dpkg/ directory.
2. Rename "available" to "available-bak".
3. Rename "status" to "status-bak".
4. Rename "available-old" to "available".
5. Rename "status-old" to "status".
6. Start Cydia and allow it to load everything it needs. Try to install or remove some apps to verify the error is fixed.

Remove Cydia apps update notification

Sometimes, you'll notice update notification of jailbreak apps in Cydia. If you doesn't want to update certain apps for any reason and would like to remove the notification, follow these steps:

1. Using iFile, navigate to /private/var/lib/dpkg/
2. Make a backup of file "status"
3. Open the file "status" using iFile Text Viewer
4. Find the package that Cydia is asking you to update.
5. Change the version number to the new version number of to a higher number (hit the Edit button in the iFile Text Viewer).
6. Save the changes and restart Cydia then you can see the notification is removed.

If you would like to receive update notification of certain apps again, just restore the version number changed in step 5.

Celeste on iPhone 4 iOS 4.3.3

This tutorial will guide you how to install and use Celeste on iPhone 4 iOS 4.3.3.

1. Add source "www.sinfuliphonerepo.com" in Cydia.
2. Search for "Celeste Bluetooth File Sharing" in sinfuliphone repo.
3. Download and install all required dependencies as well as the application itself.
4. Reboot your device. (You may need to reboot twice for the crack to activated).
5. Download BTstack 0.3-434 and put into your iPhone (Download password: "http://hqqqq.blogspot.com").
6. Install it using iFile.
7. Reboot your device and done.

Personally tested working on iPhone 4 iOS 4.3.3. 


Added:
After performed above steps, you'll notice an update notification of BTstack in Cydia. DO NOT UPDATE IT. If you would like to remove the notification, simply follow steps here. Just search for "btstack" in step 4 and change "0.3-434" to "0.4-434" in step 5.

Updated 20 Sept 2011:
Someone mentioned above method works for his iPod 3rd Generation on iOS 4.2.1. If your iDevice succeeded in sending/receiving via bluetooth after above method, please leave a comment and state your iDevice/iOS version. Thanks :)

New blogger app on Apple App Store

Google had launched a blogger app which allow bloggers to write blog entries to their connected blogger account right from their iDevices. Just browse through app store and search for "Blogger" to download it for free.

The new iOS 4.0 Walkthrough

The creator of this video go over the features of the new 4.0 software for the iPhone such as Multi Tasking, Wallpapers, and unified mailboxes.

iOS 4.0 Walkthrough

Square for iPhone

This video is quite old and I viewed it some time ago. But until now I still think this small little gadget for iPhone is way soooo COOL~~! Have a look of it yourself :)

Square for iPhone Demo by Kevin Rose