[Verizon Droid Incredible 2] bryantquach:
Today i read from droidforum.net and i see this one, and try to bring it here

source from droidforum and credit by SGMD1

All tutorials below are working as of February 2011. You will only need one file to root, which is included at the bottom of this post.

ROOT/UNROOT TUTORIAL (Courtesy of RyanZA on xdadevelopers)

1. Download and extract the z4root.zip file and copy the .apk directly to /sdcard.

2. Go to Settings -> Applications and make sure "Unknown sources - Allow installation of non-Market applications" is checked. Then click "Development" on the same page and make sure "USB debugging" is checked.

3. Open the "Files" app, navigate to the z4root location and install.

4. Launch z4root and select the Permanent Root option. Give it a minute to do its thing and reboot. If it spends more than two minutes on the message "'Running exploit in order to obtain root access" then you'll want to restart the app; this happens sometimes. Just exit the app by pressing the Home key, kill the app via a task killer (or Settings -> Applications -> Manage Applications -> z4root -> Force stop) and run z4root again. Voila, you're rooted! (You can also use z4root to unroot.)

5. Wireless Tether is a good first app to download if you're rooted. Download the most recent version of Wireless Tether (v2.0.6 as of 1/09/11) to test if you're rooted properly here

MANUAL UNROOT TUTORIAL (Use only if you previously rooted using the terminal emulator method, NOT z4root)

1. Download and install "Android Terminal Emulator" by Jack Palevich from the Market.

2. At the "$" symbol, type the following lines of code (press Enter after each line):

su (you should now see the "#" symbol)

mount -o rw,remount -t ext3 /dev/block/mmcblk1p21 /system

rm /system/app/Superuser.apk

rm /system/bin/su

rm /system/bin/busybox

mount -o ro,remount -t ext3 /dev/block/mmcblk1p21 /system

3. Exit the terminal emulator and reboot your phone. You will no longer have root.

CUSTOM RECOVERY TUTORIAL (Courtesy of Koushik Dutta aka Koush)

1. Download the Droid2Bootstrap.zip file at the bottom of this post, extract the .apk file and place it on /sdcard.

2. Go to the "Files" app, locate the Droid2Bootstrap.apk on /sdcard, install it, and open it. (Select "allow" when asked whether to grant the app superuser permissions)

3. Click "Bootstrap Recovery" and wait for the "success" notification. Then click "Reboot Recovery" and you're done! This will boot you into recovery where you can make nandroid backups, install from .zips, etc (do a search on the forums for more about custom recovery if you aren't familiar with it)

4. DO NOT delete the Droid 2 Bootstrap app once you have completed step 2, as this is the only surefire way to access the custom recovery. Holding "X" + "Power" will take you into the normal recovery.

SIM UNLOCK TUTORIAL

1. Make sure your phone line has been active and had no late payment history for at least six months. If it hasn't, VZW will not unlock your SIM.

2. Call VZW Global Support at 1-800-711-8300 and ask the representative for your phone's SIM unlock code.

3. To test it, you will need a non-VZW SIM. Once you insert it and power your D2 Global back on, it will ask for the unlock code.

NOTE: It appears that Verizon has put a carrier lock on the device for US GSM carriers. Therefore until someone figures out a workaround, you will not be able to use this device on AT&T or T-Mobile in its current state, even if SIM unlocked. The good news is that devs on various boards seem to be close to a workaround so as soon as one becomes available I will add it here.