[Xperia Z1][INFO][REF] All the info you need before you begin

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request you to sticky this thread





hello friends,

let me begin by introducing myself, i am developer for Xperia devices (X10, ARC, PLAY, S, T, Z) and am the Lead Developer of Team UtterChaos, member of Team ICX and was associated with Team FreeXperia, ... i have some experience in development for Xperia devices, specifically in kernels, rooting & recoveries and i have various how-to, reference threads which are very helpful to new & advanced users alike across various device communities... i hope even this thread will be useful to everyone... if you would like to know what things i have worked on before feel free to check some of the links in my signature below...

so some of u must be new to the Sony Xperia family & even if u are not this should be useful... this thread should get u up to speed on what you need to know for this device...


i will try to cover some very basic things and try to touch upon some advanced topics...



i will be dividing this thread into various sections, and each section will point to an individual post...

following is the list of sections covered:

• Basics
  
• FlashTool
  
• Bootloader Unlocking & Relocking
  
• Rooting
  
• Recovery
  
• Flashing Custom Kernel
  
• Flashing Custom ROMs

for those who are interested in development are free to contact me via p.m.... BUT PLEASE do not ask generic questions, post all generic queries at the forums/threads...


regards,

DooMLoRD

Basics

[ various bootmodes ]

newest Sony devices have three boot modes... these bootmodes can be reached when device is powered off...

• Normal - just press power button and device starts booting
• Flashmode - this mode is used to flash stock OFFICIAL firmware using flashtool, denoted by GREEN LED (this is similar to DOWNLOAD/ODIN mode of the Samsung devices)
• Fastboot mode - this is a special mode, denoted by BLUE LED, used when we want to flash custom kernel, custom system images, for that we need to unlock bootloader, i will tell more details about this later...

[ various key combinations ]

this is most important part...

known key combinations so far:

while device is power OFF

Volume Up + USB cable connected to PC -> FASTBOOT MODE (BLUE LED will light up)

Volume Down + USB cable connected to PC -> FLASHMODE (GREEN LED will light up)


while device is power ON

Volume Up + POWER (for 10 seconds) -> resets the battery, its like removing the battery and putting it back in [device will vibrate once]

Volume Up + POWER (for additional 5 seconds, total 15 seconds) -> will power off hard, device will power down [device will vibrate thrice]



hard power off





[ understanding About Phone ]




(check out attachment if the above pic is not visible)


What it all means for u:

Kernel version:
Sony has released this device with 3.4.0 kernel. When custom kernels are released (they will surely be soon) this string will change.


Model number:
The Xperia Z1 has model number as C69xx and has few models. They differ in the spectrum of frequencies supported for 3G/WCDMA http://www.gsmarena.com/sony_xperia_z1-5596.php
C6902/L39h - HSDPA
C6903 - LTE
C6906
C6943


Android version: http://en.wikipedia.org/wiki/Android_(operating_system)
Sony officially launched this phone with android version 4.2.2 (aka Jelly Bean).


Baseband version: [linked to firmware version]

(Crudely) this is a software interface which communicates with radio -> gsm/wcdma (2g/3g)/LTE, basically acts as a base for the main OS to ‘talk-to’ the hardware on the phone [I know this explanation isn’t precise even partly incorrect.. if someone can help me out I will update it]
This is similar to the "radio" image of the HTC devices.


Build number: [aka firmware version]

This is dependent on which firmware u flash on ur phone and is linked to the baseband version.
Btw some devs use this field to add their own ‘signature’ to the ROM so if u are using custom ROMs this field might be varying. Though the Baseband version for a particular firmware remains same.




what is firmware?

The firmware is a package containing all the official software for a particular build. It will contain system, kernel & baseband files. Generally the firmware is supplied (on forums) in form of FTF package (a container file ending with .ftf) which can be flashed via FlashTool.



what are the ways to update/repair firmware?

SEUS (Sony Ericsson Update Service) / PCC (PC Companion) / EMMA are all official ways to update to new or repair existing firmware on your device. SEUS/PCC are available to all users (consumers), EMMA is special and is only available to select individuals. This requires you to connect device to PC and then the software will check for updates and download them over the internet.

Updates can also be sent as FOTA (Firmware over-the-air)/OTA (over-the-air) updates where in you can download and install the updates without the need to connect to PC/any software.

FlashTool is an unofficial user-created tool, but the best way to flash official firmwares. Generally the firmware is supplied in form of FTF package (a container file ending with .ftf) which can be flashed via FlashTool. Thus FlashTool is the easiest way to do offline updates, just download the FTF file, it keep on PC and flash ur device when ever you want to.

FlashTool

Flashtool is one of the MOST IMPORTANT piece of software for ur phone, it is an unofficial, but the best way to flash official firmwares on both locked and unlocked bootloader devices. Generally the firmware is supplied in form of FTF package (a container file ending with .ftf) which can be flashed via FlashTool. Thus FlashTool is the easiest way to do offline updates, just download the FTF and keep on PC and flash ur device when ever you want to. One can also flash select partitions using FlashTool, say you want to flash baseband(radio) from newer/older firmware but want to keep the main system the same u can do that using newest FlashTool! FlashTool also supports fastboot modes! so if you are not very comfortable with command line then u can use the FastBoot Toolbox inbuilt into FlashTool to fastboot the kernels!

FlashTool can be used to flash both locked and unlocked bootloaders devices.

For all flashtool informations (download links, release notes, FAQ) go to the Flashtool Homepage


As a co-developer of Flashtool I have already added support for the Z1!

we will soon be releasing a official version specifically for Xperia Z1!



Flashtool is on github : FlashTool GitHub repo




[FLASHTOOL GUIDE] HOW TO for n00bies (excellent guide for new users, HIGHLY RECOMMENDED!! The info for Rooting, Recovery & Bootloader UNlock in that thread is for older Xperia devices...)

i will try n get more links for FlashTool and post it here




Sony also provides an official FlashTool but it can be used only with unlocked bootloader devices

Bootloader Unlocking & Relocking

[Tutorial] Xperia Z Bootloader Unlocking/Relocking


Latest FlashTool 0.9.10.2beta4 onwards can correctly unlock (official way) and relock device... i recommend using the latest FlashTool version to unlock & relock device...


all question regarding bootloader unlocking, relocking should be posted in relevant thread

Rooting

Root guide with 360 root/Vroot

Recovery

this space will be updated once recoveries are posted

Flashing Custom Kernel

CUSTOM KERNELS ARE SPECIFIC TO ROMs...

you cant use stock kernel on CM ROM and you cant use CM kernel on stock ROM....


there are two ways to flash custom kernel

first download the kernel file... if it is a boot.img then use Method 1 (fastboot mode) or if its a update.zip file then use Method 2 (recovery)



Method 1 - fastboot mode

if you get kernel in boot.img format then do the following

1. reboot device into fastboot mode
2. then flash the kernel using following command:
   Code:

   fastboot flash boot boot.img

3. then reboot from fastboot
   Code:

   fastboot reboot

4. thats it now device should start booting that kernel

Method 2 - recovery

if you already have recovery working on your device then do the following

1. save the update.zip on SDCARD
2. reboot into recovery
3. flash the update.zip which contains the kernel
4. reboot into system
5. thats it now device should start booting that kernel

Flashing Custom ROMs

Most custom ROMs are provided as update.zip. Its a technical term, basically its a special signed ZIP file which can be flashed via custom recovery.

1. Download the ZIP file and save it on ur PC
2. now connect ur device and save the ROMs ZIP file on the SDCARD
3. disconnect the device (after copying is over)
4. reboot into recovery
5. go to install ZIP from sdcard menu and navigate to the folder where you saved the ZIP file
6. now select it
7. recovery will start flashing the ROM
8. after flashing is over just reboot device and you will be on the custom ROM

Tips:

some CUSTOM roms require specific kernels (like CM9) in that case FIRST flash the corresponding kernel and then follow the instuctions posted above

sometimes the ROM requires cleaning /data & /cache partitions. you can wipe these before flashing the ROM! [WARNING YOU WILL LOSE UR DATA BY DOING THIS!]

krabappel2548 said:

Hey mare, I don't know if you have seen it but I already made a thread like this here

Sent from my C6603 using xda app-developers app

Click to expand...

Click to collapse

i am pretty sure the content in this thread would be worth the while

jos_031 said:

Baseband Device manages all the functions which require an antenna. The baseband processor has its own RAM and firmware in NOR flash, separate from the main CPU core resources. The baseband is a resource to the OS. The Wi-Fi and Bluetooth are managed by the main CPU, although the baseband stores their MAC addresses in its NVRAM. This firmware is called baseband version. It is basically a separate RTOS (Real Time Operating System). Xperia Z1 uses qualcomm processor hence it uses OS called A.M.S.S. and the kernel is called REX
The system is made of 69 concurrent tasks
Contains Tasks for
1) Hardware management (USB, USIM, DSPs, GPS. . . )
2) Protocol stacks at each layer (GSM L1, L2, RR, MM. . . )

Initiation Algorithm

Rex Core Tasks
SLEEP: Idle task.
DPC: Routes APCs across tasks.
MAIN: Launches all system tasks, then handles timer events.
DOG: Watchdog. Constantly checks that tasks are alive.
DS: Data Services task. Unied data gathering task for all protocol layers.
CM: Call Manager task.
PS: Packet-switched Services. Network stacks at upper layers (TCP/IP, PPP. . . )
DIAG: Provides the diagnostic interface

Click to expand...

Click to collapse

dude this is ment to be for basic understanding

the explanation u gave, half of it went over my head

shubh_007 said:

Thanks. This is a pretty nice guide. Btw I noticed an error, I know it's not a big deal but just to inform you, sony officially launched this phone not with "4.1.2" but 4.2.2. Please edit the first post.

Sent from my Xperia Neo V using xda premium

Click to expand...

Click to collapse

thanks.. fixed...

dw1llow said:

This thread/developer seems slow; and doesn't even understand that guy's diagram and technical explanations....

Rooting guide already available @ http://xdaforums.com/showthread.php?t=2439328 Maybe should make that thread sticky rather than this one.

Click to expand...

Click to collapse

yes i am bit slow as i have my MBA studies going on and 4 other devices (check sig) in active development, each having a bunch of threads and working on rooting toolkits, recoveries, kernels and now starting off with ROM related work takes a good amount of my time...

unfortunately i do not have an extensive technical knowledge to understand the complete diagram posted by him..

Root guides will keep changing if the exploit gets patched, trust me i know that... i have been creating rooting guides/building my own rooting toolkits and working on own exploits for quite some time now, right from the Xperia X10 days (2011)...


anyways updating link to that guide...