Finally, I did it. I installed mango beta in my HTC HD7. No doubt this is a great great leap forward for microsoft. But still we need much much more... 


How to install it? I will explain the process. but - I won’t be responsible if you end up damaging your device. Make sure to follow the steps without fail. Because i was able to install mango beta without any issues by following these steps. 


Let me thank windowsphonehacker.com and addictivetips.com for this. 

Requirements:

1. 1. You must have at least 60% battery remaining in your phone. I completed the entire process by having less than 50% - but its recommended to have 60% or full battery.
2. 2. Remember that the minimum hardware requirements for Mango beta are the same as Nodo (the last official update to microsoft - which gave you cut-paste option). If your device only supports pre-Nodo versions of WP7, then this procedure is not for you.
3. 3. Go to this page, and download the file.

Instructions:

1. 1. If you have a 32-bit system, go to this link, while for 64-bit, here. Download the tool suite provided on the respective links.
2. 2. Install the developer tools you just downloaded and then exit setup.
3. 3. Now we turn our attention to the “Mango For All” tool downloaded in step 3 of our requirements. Unzip the file if not a zipped, just copy the four contents), and save the unzipped contents to your system drive (c drive).
4. 4. Using your phone’s USB cable, connect to your PC. This will automatically open up Zune. If not do nothing. 
5. 5. If Zune opens up, Exit Zune without doing anything.
6. 6. From the “Mango for all” folder, run “update.bat” file. This will open up a series of option screens, follow the instructions that do the following for you:
   Create a backup of your phone
   Provide your with enough rights to update to Mango
   Save your backup copy in the “Mango for all” folder (will take approx 600 secs)
7. 7. This will open Zune all by itself, and you will get an update notification. That’s the Mango beta. After you apply it (update - 1), and reopen Zune, you will see again an update visible there (update - 2). This is the sought-after Mango beta 2. Install this and you now have Mango beta 2 on your WP7 Nodo device! (approx 20 - 30 mins) 

Important:

You must restore to NoDo before the Mango update is released, according to Microsoft. This applies to everyone, including registered developers.


Restore NoDo
To restore NoDo, run the Restore.bat file, or follow the instructions in Readme.txt.


Do not, at any cost, delete the premangostate folder in your C Drive. This is required to restore the Nodo version - once mango is officially out. 


Update: Your Zune will not detect the new mango OS. You have to download and install New Zune for Mango form here. Both old Zune and New Zune can be installed side by side. No problem. 

Thanks to : 

1. www.windowsphonehacker.com

2. www.addictivetips.com

Windows Phone 7 shortcuts

Original article

By Damian Koh, CNET Asia (click here)

Basic controls

How to	Shortcut
Unlock phone	Slide up on the locked screen to key in passcode.
Set ringing mode to silent	Press the volume button to silence the ringer; press the power button to silence ringer and switch off screen.
Set ringing mode to vibrate	Press the volume button and tap on the Ringer icon.
Display the status bar	Tap the top edge of the screen.
Return to home screen	Press the Start button.
Open a context-specific menu	Tap and hold on the screen.
Pin a Live tile on home screen	Tap and hold on the screen to bring up "pin to start" option. This works for applications, pictures, songs, map locations, favorite Web sites, OneNote notes and contacts.
Unpin a Live tile on home screen	Tap and hold on the screen to highlight the tile then select the unpin icon on the top right corner.
Rearrange tiles on the home screen	Tap and hold on the screen to highlight the tile then move is to desired location.
Do a voice search	Press and hold the Start button. Typical commands include "call name", "call phone number", "find search term" and "openapplication".
Access advanced options	Tap on the row of three dots at the bottom of the screen.
Quickly call someone from phone history	Tap the Call icon to call the person at the current number.
Jump to a letter in contacts	In People, tap any letter in the colored box and then the desired letter in the alphabet grid.
To bring up in-call options	Tap on the Down arrow to access the speakerphone, mute, hold and add call options.

Messaging

How to	Shortcut
Access common punctuation symbols	Tap and hold the period button and slide your finger to any of the /, :, ", &, + or - punctuation.
Activate onscreen cursor	Tap and hold the screen near the text you want to change.
Delete multiple emails	Tap on the far left of an email to bring up the check boxes.
To quickly add a period	Tap Space twice.
Turn on Caps lock	Tap and hold or double-tap the Shift key. Tap once more to turn it off.
Replace word you've type	Tap on the word to bring up the suggested list.
Send a multimedia message	Tap on the Attach button to pick a photo or start the camera for a new picture.

Web browser

How to	Shortcut
Zoom in/zoom out on Web page	Pinch/reverse pinch or double-tap to zoom in on a particular section.
Bookmark a Web page	Tap on the Star icon with a + sign.
Toggle between multiple windows	Tap on the multiple page icon.
Access common domain names	Tap and hold .com button and slide your finger to any of the .org, .edu and .net selections.

Multimedia

How to	Shortcut
Zoom in/zoom out when viewing photos	Pinch/reverse pinch or double-tap.
Share photos via email/SMS/or upload to Facebook/SkyDrive	Tap and hold the picture or tap More and select the Share option.
Access music playback controls	Press the volume key to bring up a mini player control.
Activate the camera when phone is locked	Press and hold the camera shutter.