GSM Shop GSM Shop
GSM-Forum  

Welcome to the GSM-Forum forums.

You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features.
Only registered members may post questions, contact other members or search our database of over 8 million posts.

Registration is fast, simple and absolutely free so please - Click to REGISTER!

If you have any problems with the registration process or your account login, please contact contact us .

Go Back   GSM-Forum > Product Support Sections > Special Solutions / Services / WebShop > SharkGSM Webshop

 
 
LinkBack Thread Tools Display Modes
Old 07-02-2011, 21:34   #1 (permalink)
Product Manager
 
sharkgsm's Avatar
 
Join Date: Apr 2005
Location: GuangZhou,China
Age: 40
Posts: 108
Member: 139415
Status: Offline
Sonork: 100.1587671
Thanks Meter: 49
What is S-OFF? (xtc clip)


What is S-OFF?


After doing your phone S-OFF, you do set follow functions on factory settings

- sim lock
- hboot lock ( this is the bootloader lock, you will be able flash cooked rom after this)
- cid lock (region lock so you can't flash it with other roms, unbrand it, or downgrade it)
- user lock (will be set to factory default)
- pattern lock (will be set to factory default)
- phone usage counter (helps you refurbish the phone)


Temproot and Permaroot
- What's the difference?
First, let me explain root access. Root access, superuser or su (all the same thing) is basically an admin account for Linux. It gives us permission to to access commands that normally couldn't be accessed, and to write information to partitions that normally couldn't be written to. On older devices (such as the Hero), once we had root we could write to the /system and /recovery partitions, and flash custom ROMs. In the case of the IS (and every HTC device since the desire), this isn't true. Getting root access is quite trivial and no where near as useful, because the internal flash memory (NAND or eMMC) is locked down and it means we everything we 'write' to the system (or any other protected partition) is lost on reboot because it is a non permanent change. In short, this stops us from flashing custom ROMs and recovery. This is a problem for any devices that are shipped with the Security flag on (S-ON). To get Permaroot, and the ability to flash custom ROMs, we need S-OFF.

So what's this S-OFF then?
Making the phone S-OFF with XTC clip, means also that you reset the simlock, userlock and CID to factory state !!! Mean, your phone is 100% UNLOCKED
Since the Desire, HTC have been securing their phones better than before by locking the internal flash memory (NAND or eMMC) to stop it being written to, unless the file being flashed is signed by a private key only known to HTC. This is controlled by a flag (@secuflag) and is identified as the device being S-ON. Telling the HBoot the device is Security Off (S-OFF) stops this check for the key, and allows us to write anything to any partition, which is what we are aiming for.

There are actually two levels of S-OFF. The Bootloader (HBoot) and the Radio. Getting S-Off on the HBoot gives us everything we need, but doesn't actually turn off the @secuflag which is set in the radio. What it is possible to do is to flash a HBoot that believes the Radio is set to S-OFF, as the HBoot is responsible for setting that flag. Once the HBoot on the phone is S-OFF, we can write to all the partitions and basically do whatever we want, but it is possible to go one step further. Flashing a radio that is S-OFF and actually setting the @secuflag off gives 100% total access to every part of the phone and it's software, as it becomes network unlocked allowing to you to use any SIM and also allows you to flash a ROM from any carrier (known as Super CID). It also makes it nigh on impossible to permanently loose root no matter what you flash. Once you have radio S-OFF, it makes it much easier to flash new HBoots and ROMs even if you flash something that is locked down tight.

Setting the Radio to S-Off is not necessary, and gaining S-OFF on the HBoot is more than most people will ever need. Radio S-Off is just the last step of the puzzle, but it is worth noting the only points you can permanently brick your phone is flashing a radio or a HBoot, if either of these go wrong you will end up with a shiny expensive paper weight so there is risk involved.

What about this XTC Clip, can that help?
The XTC clip is a hardware device that can unlock S-OFF HTC phones, regardless of the software.

S-OFF created by XTC Clip is temporary or permanent?
You can flash your phone as many times you want, your HTC will remain S-OFF forever, it is a permanent S-OFF !!!

What about people who are getting devices shipped with S-OFF?
There are reports that a lot of devices coming out of China and India are shipping with the @secuflag set off. These are lucky people, and have the ability to write to the flash memory, but it can't help those of us who are S-ON. It is also worth noting that because most devices are S-ON, no one has written any ROMs or kernels for the device so they will probably have to wait until we get a way of turning our devices to S-OFF until anyone creates any software for it.


++++++++++++++++Glossary+++++++++++++++++


Bootloader a.k.a HBoot
- This is the piece of software that runs before anything else on the phone. It basically packages it all up, tells what to run in what order e.t.c Every computer device has a bootloader in some form or another, be it an Android Phone, iPhone, Windows PC, iMac e.t.c. The HBoot is accessible by switching your phone off, then holding down volume down as you turn it back on. The first line of the HBoot will tell you if you are S-OFF or S-ON.

Recovery
- The recovery is the piece of software that allows us to write files to partitions while they aren't being used. It is the portal to allow us to flash custom ROM's and kernels. There are custom recoveries with more options than the stock such as ClockworkMod.

Superuser a.k.a su or Root
- This is a user that is present on all linux distros that allows higher permissions than standard users have access to. Certain apps need superuser permissions to function, such as Titanium Backup.

parts of this FAQ are "taken" from l0st.prophet @ www.xda-developers.com, 10x
 
Old 07-04-2011, 19:28   #2 (permalink)
No Life Poster
 
LIEREN's Avatar
 
Join Date: Dec 2008
Location: iCloud ID Removed Service
Posts: 1,268
Member: 917576
Status: Offline
Sonork: QQ:366688456
Thanks Meter: 533
Welcome shark products ¥




br.
lieren
 
 

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
thread Thread Starter Forum Replies Last Post
my 8810 is phone locked ,can somebody please help duyphuc Nokia Legacy Phones ( DCT-1 ,2 ,3 ,L ) 18 12-23-2014 09:03
what prog changes imei on 6110 and how do i do it? Ravetrancer Nokia Legacy Phones ( DCT-1 ,2 ,3 ,L ) 3 07-31-2012 20:09
SIM restriction pending -- what does it mean? Ryu Nokia Legacy Phones ( DCT-1 ,2 ,3 ,L ) 7 07-17-2011 10:05
For Jefferson -6110 goes off itself sc~micro Nokia Legacy Phones ( DCT-1 ,2 ,3 ,L ) 1 06-19-1999 21:28

 



All times are GMT +1. The time now is 02:25.



Powered by Searchlight © 2024 Axivo Inc.
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2024 DragonByte Technologies Ltd.
- GSM Hosting Ltd. - 1999-2023 -
Page generated in 0.15731 seconds with 9 queries

SEO by vBSEO