Basic Knowledge for Android phones
What is the "root"?
"Root" privileges equivalent computer administrator privileges, the user can "Root" full access to the Linux kernel: Root User can edit anything within the system. For security reasons, the "ordinary users" do not have the access privileges.
root your phone, you can read and write is not root, you can not access the phone's internal core block.
Of course, whether the root depends entirely on your own. Ordinary mobile phone users do not root can also be a good use of their phones.
Why root my phone?
The main reason is to brush a third-party ROM (equivalent to reinstall the operating system of the computer). In ROOT privileges you can run software that requires root.
Root, you can do:
a) run the Linux command (android ADB) and superuser privileges.
b) You can use many software needs root privileges (for example, titaniumbackup, Root Explorer, etc.).
c) to change some important core system settings. For example, turn off the security check of the official Rom so we can brush to write third-party firmware, or run some interesting adjustment program for example overclocking again, or you can also let us install the core recovery program.
3, root safe?
Yes. If you are bold but cautious, follow the tutorial to do, not what eggpain.
4, root will delete my profile?
Not. root just change the system privileges.
5, root will make my warranty?
Calmly said, you can unroot your phone and restore factory settings, to pretend that nothing had happened.
6, root process is reversible?
Yes. As long as you are willing to completely unroot your phone.
Second, with regard to the S-OFF and Flash.
1, "S-OFF" What is it? "S-ON" and "S-OFF" What's the difference? Why do I need the "S-OFF"?
Each the phone default state are "S-ON". In order to obtain the fullwrite permissions (eg brush custom firmware installed homemade recovery tools)need to be converted to S-OFF.
Phones are usually in the "S-ON" (Security ON) state, the mobilephone "/ system" and "/ recovery" partition can not be reador written. Most direct expression of the high privileges RE Manager File Manager to delete the "/ system" folder under the program, restart program will emerge (It also said a lot of friends or delete can not get the root system comes with software reasons); another can not be modified to boot the first screen screen.
S-OFF is different from the root: S-OFF allows you to to reflash custom firmware Bootloader Fastboot or homemade recovery (the majority of people are clockwork).
2, how the S-OFF "?
There are two S-OFF:
a) mode through the installation works hBoot to S-OFF. The so-called softsolution.
b) through some equipment, such as a white card S-OFF. Called white cardunlock.
Displayed at the end of the first line of the soft phone solution intoBootloader: ENG S-OFF white card phone solution is: SHIP the S-OFF. ENGintended for engineering engineering mode SHIP that is intended for theoriginal release.
3, how to change back to the "S-ON"?
For some reason (sent warranty) want to restore S-ON, you need to download the corresponding version of your phone HTC official RUU to brush back to theoriginal firmware reflash program. S-ON back.
4, "RUU" What is it?
The RUU meaning Rom Update Utility. Brush tool is a PC side. Most RUU are HTC official release, which contains the Brush tool and the official firmware, and packaged as a separate file.
5, what is the "Rom"?
Rom means Read Only Memory, he refers to the internal memory of the phone cannot access read-only unit. He includes the android operating system and all ofthe original pre-installed application software tools.
Usually a full ROM (or firmware) includes: a recovery image, a boot image(including the core (Kernel) and ramdisk), a system image (operating system, orsimply "OS"), and a Radio mirror.
We often can flash into the phone memory mirroring collectively referred to asa ROM or firmware.
6 What is the "Radio"? Why do we have to brush Radio?
A suitable Radio can improve our mobile phone signal, Bluetooth, WiFi and GPS. Mayalso improve the battery life of the phone.
7 What is the "Flash?
Flashing is a new firmware image flash into the phone's memory.
You can Flash into a recovery, or a boot, or system, or Radio, or the complete Rom contains all of the above things.
8, why should I Flash?
Flash:
a) to update your phone to the latest official firmware (official so without root without S-OFF, nor will void the warranty).
b) your cell phone to remove the official firmware brand customization become common.
c) the flash into the custom firmware: Contains / removal HTC sense other android version, and so on.
d) Installation of a better recovery tool, like clockwork.
e) a more appropriate Radio.
9, flash the opportunity to remove my personal information?
If you just flash boot or recovery if not.
However, if you flash systems or complete Rom. Your personal information will be cleared away, so backup personal data before flash.
In the markets where there is a lot of backup software. (E.g., titanium backup)
You can also backup NANDroid.
10 flash make warranty?
Calmly speaking, if you backup the original firmware or download the corresponding version of your phone firmware, you can always go back and flash.
Similarly, most of the parallel phone, all warranties are clouds.
Third, on the Bootloader and Recovery.
What is "Bootloader"?
Bootloader is a Rom firmware management tools. Allows you to restore the factory setting, to load Recovery tool Fastboot Brush.
Bootloader where you can view S-ON/S-OFF status, firmware and Radio version.
Go to the the Bootloader without root or S-OFF. In each HTC factory phone has.
2, how to get into Bootloader?
Shut down, and then press and hold the volume - and the power button. (Need to fastboot "Close," Settings "application" change or disconnect the battery, let the phone real shutdown.)
You can pull the battery to exit the Bootloader.
If you installed a homemade recovery, you can enter the recovery, and then restart the phone.
3, how to back up my current ROM (firmware)?
Homemade recovery backup.
Homemade recovery is it?
A homemade recovery (like clockwork) is an enhanced version of the recovery,replace the original firmware recovery.
Homemade recovery recovery is better than the original, because he can so that you can safely brush to write unsigned homemade rom can also back up the entire 1firmware image in the memory of your phone (NANDroid backup).
5, how to install ClokworkMod (CWM) Recovery?
You must first root and S-OFF. Then use "Rom Manager" installation,or a separate download clockwork recovery manual brush writing ADB environment.
6 What is NANDroid backup?
A complete decency mirror can be re-brush back to the phone. Its not just asimple backup, because he contains all the content in your phone memory: Boot,Recovery, system, data, cache, etc.. He is a snapshot of the entire ROM of your phone.
Method perform NANDroid backup: enter clockwork recovery, into the "Backup and Restore" option. NANDroid backup will be saved in sd card ClockworkMod files folder within.
7 how to load NANDroid the backup?
If you can go into clockwork recovery, simply load from his menu NANDroid.
If your phone bricked thus unable to enter clockwork recovery last: separatedownload clockwork recovery to a PC, and then open the cmd console, enter thedirectory had a clockwork recovery, use the following the ADB command-brushwrite: "fastboot flash recovery recovery-clockwork-2.5.1.2-vision.img". (ADB environment on your PC, but seems to move dialogue card to unlockthe machine useless)
What is ADB?
ADB means Android Debug Bridge. Linux command to issue commands on the mobile phone. In the MS-DOS environment, you can directly use the ADB command or enter ADB shell using Linux command. ADB, you can install the software, uninstall the software, reflash mirror, change phone settings and so on.
What is the "root"?
"Root" privileges equivalent computer administrator privileges, the user can "Root" full access to the Linux kernel: Root User can edit anything within the system. For security reasons, the "ordinary users" do not have the access privileges.
root your phone, you can read and write is not root, you can not access the phone's internal core block.
Of course, whether the root depends entirely on your own. Ordinary mobile phone users do not root can also be a good use of their phones.
Why root my phone?
The main reason is to brush a third-party ROM (equivalent to reinstall the operating system of the computer). In ROOT privileges you can run software that requires root.
Root, you can do:
a) run the Linux command (android ADB) and superuser privileges.
b) You can use many software needs root privileges (for example, titaniumbackup, Root Explorer, etc.).
c) to change some important core system settings. For example, turn off the security check of the official Rom so we can brush to write third-party firmware, or run some interesting adjustment program for example overclocking again, or you can also let us install the core recovery program.
3, root safe?
Yes. If you are bold but cautious, follow the tutorial to do, not what eggpain.
4, root will delete my profile?
Not. root just change the system privileges.
5, root will make my warranty?
Calmly said, you can unroot your phone and restore factory settings, to pretend that nothing had happened.
6, root process is reversible?
Yes. As long as you are willing to completely unroot your phone.
Second, with regard to the S-OFF and Flash.
1, "S-OFF" What is it? "S-ON" and "S-OFF" What's the difference? Why do I need the "S-OFF"?
Each the phone default state are "S-ON". In order to obtain the fullwrite permissions (eg brush custom firmware installed homemade recovery tools)need to be converted to S-OFF.
Phones are usually in the "S-ON" (Security ON) state, the mobilephone "/ system" and "/ recovery" partition can not be reador written. Most direct expression of the high privileges RE Manager File Manager to delete the "/ system" folder under the program, restart program will emerge (It also said a lot of friends or delete can not get the root system comes with software reasons); another can not be modified to boot the first screen screen.
S-OFF is different from the root: S-OFF allows you to to reflash custom firmware Bootloader Fastboot or homemade recovery (the majority of people are clockwork).
2, how the S-OFF "?
There are two S-OFF:
a) mode through the installation works hBoot to S-OFF. The so-called softsolution.
b) through some equipment, such as a white card S-OFF. Called white cardunlock.
Displayed at the end of the first line of the soft phone solution intoBootloader: ENG S-OFF white card phone solution is: SHIP the S-OFF. ENGintended for engineering engineering mode SHIP that is intended for theoriginal release.
3, how to change back to the "S-ON"?
For some reason (sent warranty) want to restore S-ON, you need to download the corresponding version of your phone HTC official RUU to brush back to theoriginal firmware reflash program. S-ON back.
4, "RUU" What is it?
The RUU meaning Rom Update Utility. Brush tool is a PC side. Most RUU are HTC official release, which contains the Brush tool and the official firmware, and packaged as a separate file.
5, what is the "Rom"?
Rom means Read Only Memory, he refers to the internal memory of the phone cannot access read-only unit. He includes the android operating system and all ofthe original pre-installed application software tools.
Usually a full ROM (or firmware) includes: a recovery image, a boot image(including the core (Kernel) and ramdisk), a system image (operating system, orsimply "OS"), and a Radio mirror.
We often can flash into the phone memory mirroring collectively referred to asa ROM or firmware.
6 What is the "Radio"? Why do we have to brush Radio?
A suitable Radio can improve our mobile phone signal, Bluetooth, WiFi and GPS. Mayalso improve the battery life of the phone.
7 What is the "Flash?
Flashing is a new firmware image flash into the phone's memory.
You can Flash into a recovery, or a boot, or system, or Radio, or the complete Rom contains all of the above things.
8, why should I Flash?
Flash:
a) to update your phone to the latest official firmware (official so without root without S-OFF, nor will void the warranty).
b) your cell phone to remove the official firmware brand customization become common.
c) the flash into the custom firmware: Contains / removal HTC sense other android version, and so on.
d) Installation of a better recovery tool, like clockwork.
e) a more appropriate Radio.
9, flash the opportunity to remove my personal information?
If you just flash boot or recovery if not.
However, if you flash systems or complete Rom. Your personal information will be cleared away, so backup personal data before flash.
In the markets where there is a lot of backup software. (E.g., titanium backup)
You can also backup NANDroid.
10 flash make warranty?
Calmly speaking, if you backup the original firmware or download the corresponding version of your phone firmware, you can always go back and flash.
Similarly, most of the parallel phone, all warranties are clouds.
Third, on the Bootloader and Recovery.
What is "Bootloader"?
Bootloader is a Rom firmware management tools. Allows you to restore the factory setting, to load Recovery tool Fastboot Brush.
Bootloader where you can view S-ON/S-OFF status, firmware and Radio version.
Go to the the Bootloader without root or S-OFF. In each HTC factory phone has.
2, how to get into Bootloader?
Shut down, and then press and hold the volume - and the power button. (Need to fastboot "Close," Settings "application" change or disconnect the battery, let the phone real shutdown.)
You can pull the battery to exit the Bootloader.
If you installed a homemade recovery, you can enter the recovery, and then restart the phone.
3, how to back up my current ROM (firmware)?
Homemade recovery backup.
Homemade recovery is it?
A homemade recovery (like clockwork) is an enhanced version of the recovery,replace the original firmware recovery.
Homemade recovery recovery is better than the original, because he can so that you can safely brush to write unsigned homemade rom can also back up the entire 1firmware image in the memory of your phone (NANDroid backup).
5, how to install ClokworkMod (CWM) Recovery?
You must first root and S-OFF. Then use "Rom Manager" installation,or a separate download clockwork recovery manual brush writing ADB environment.
6 What is NANDroid backup?
A complete decency mirror can be re-brush back to the phone. Its not just asimple backup, because he contains all the content in your phone memory: Boot,Recovery, system, data, cache, etc.. He is a snapshot of the entire ROM of your phone.
Method perform NANDroid backup: enter clockwork recovery, into the "Backup and Restore" option. NANDroid backup will be saved in sd card ClockworkMod files folder within.
7 how to load NANDroid the backup?
If you can go into clockwork recovery, simply load from his menu NANDroid.
If your phone bricked thus unable to enter clockwork recovery last: separatedownload clockwork recovery to a PC, and then open the cmd console, enter thedirectory had a clockwork recovery, use the following the ADB command-brushwrite: "fastboot flash recovery recovery-clockwork-2.5.1.2-vision.img". (ADB environment on your PC, but seems to move dialogue card to unlockthe machine useless)
What is ADB?
ADB means Android Debug Bridge. Linux command to issue commands on the mobile phone. In the MS-DOS environment, you can directly use the ADB command or enter ADB shell using Linux command. ADB, you can install the software, uninstall the software, reflash mirror, change phone settings and so on.
