Then when i selected Reboot system, then my problem started, what should i do or my phone is broken? I'm sorry for my english and my ignorance in this field.
Team Maverick highly recommends using Hashcode's safestrap found here - (Website) "x"
Safestrap Instructions "x"
Start in stock MotoBlur "x"
Remove any bootstraps that you currently have installed "x"
Install Droid3Safestrap.apk "x"
Click "Install Recovery" "x"
At the bottom of the screen it should have "1.06". If not you have the wrong version. "x"
Now reboot and enter recovery by hitting [ menu ] during the splashscreen at bootup "x"
Make a backup. (While in non-safe mode, backups include your primary system. Nice for disaster recovery.) "x"
Toggle Safe System to ENABLED using the Safe System Menu (near the bottom of the main menu). This will store a copy of your userdata for later. "x"
*IMPORTANT* Restart and enter back into safestrap BEFORE flashing or wiping. "x"
Select Install zip from sdcard "x"
Select Choose zip from sdcard "x"
Find and select D3-MavROM-xxx.zip "x"
Select Wipe data/factory reset "x"
Select Yes delete all data "x"
Go Back "x"
Reboot system "x"