[Xperia Z1 Q&A, Help & Troubleshooting] theshadower10:
This is my NOOB friendly version for rooting and installing Dual Recovery on a Sony Xperia Z1S (C6916).

First things first, I have written this entire this myself and have only used links from other posts here on XDA.

The thank you's will be at the end of this post.

Ok, Now onto the real reason your here...

Follow these steps to pre-pair your Z1S for the road ahead...​

1)	Go to "Settings-About Phone".

Be sure your "Model Number" is "C6916".

Your "Build Number" is "14.4.B.0.37".

If your "Build Number" is different then see 2nd post for "How to Downgrade/Upgrade Build Number"

2)	Click "Build Number" about 7 times (I think) to unlock "Developer Mode".

3)	Go back to "Settings" screen.

Second option from the bottom should now be "Developer Options".

5)	Enter this new screen and enable "USB Debugging".

6)	Go back to "Settings" and enter "Security".

Enable "Unknown Sources" and disable "Verify Apps".

7)	Go to "support.sonymobile.com/us/tools/pc-companion/"

Download, Install, plug device in, and it should detect and install drivers for your Z1S.

8)	Download & Extract "xdaforums.com/showthread.php?t=2784900" to a folder on the desktop (Name folder something easy like Z1S).

9)	Download & Extract "Z1-lockeddualrecovery2.8.3-RELEASE.installer.zip" from "nut.xperia-files.com/" by clicking the "XZDualRecovery" to the same folder from step #8 (keeping separate folders inside to avoid confusion).

Well that seemed like allot now didn't it? Well the worst is over (hopefully).

Follow the below steps to root your phone...​

1)	On computer go to the folder where you extracted "Easy Root Tool v12.4"

Run file called "install.bat"

Wait for it to load and follow the on-screen instructions to gain root.

Notes!!!

a)	If at any time it seems like the tool has frozen, it probably has.

Wait for at least 1 minute and then click the red X in the top right of the window to close.

Press "Ctrl+Alt+Delete" and select "Start Task Manager" (depending upon windows version).

Choose the "Processes" tab and look for "abd.exe".

Choose it and then click "End Process" and confirm in the new window.

If you do not find "adb.exe" or you have killed it already then repeat step 1.

2)	Once Easy Root Tool v12.4 has completed and shows a successes message you will be rooted! But we cant just use it as it is now, its "SuperSU Binary" is outdated.

3)	Unplug usb and reboot your phone.

4)	Once rebooted, go to the "Play Store" and search for and download "supersu" by "Chainfire" (support him if you can :P)

5)	Once installed run supersu and a window should come up saying to update binaries...well...update them

6)	When finished you will now have root, super user control, but outdated "BusyBox".

*******	NOTE!!!

​

I have found out that some users were having problems after updating "BusyBox".

Update at your own risk!!!

BTW it worked for me with and without updating so I'm just giving feedback from other users.

7)	Use "Play Store" again to download, install, and run "BusyBox" by "Stephen (Stericson)".

a)	Let it run until "Smart Install" is finished.

b)	Choose "Replace All (Symlinks all)" (not supposed to be able to but it worked for me :P)

b1)	if it doesn't check then don't worry about it. its an extra step

8)	Choose "Install" and wait for process to finish.

9)	Congratulations! You now have Root, SuperSU, and BusyBox needed to use your phone to its (almost) full potential.

Now onto the Custom Recovery...

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1)	Go to the folder we created (in a land far far away...lol...couldn't help it :P) and go into the dual recovery folder.

a)	Run "install.bat" and (if we installed SuperSU) choose option #1 (if we installed SuperUser) choose option #2.

b)	Follow instructions until you get success message. (see above for freeze or errors fixes at 1-a)

2)	Congrats again! this time you now have a dual recovery!

a) I recommend installing "NDRUtils [root]" by "CamberCreek", it makes things much easier with your new found recoveries.

Here is my who's who and thank you's for this post. (this is in order of use in guide not relevance or importance)

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1)	XDA for such a great site!

2)	Sony Mobile for a great phone and PC Companion.

3)	zxz0O0 for his Easy Root Tool v12.4 without which I would have been lost.

4)	[NUT]'s Z1-lockeddualrecovery2.8.3-RELEASE.installer.zip recoveries woot!

5)	Chainfire for SuperSU the force in this rooted world.

6)	Stephen (Stericson) for BusyBox the gears that keep us going.

7)	CamberCreek for NDRUtils [root] making Xperia recoveries easier since....

8)	Bin4ry & Androxyde for Flashtool making time travel possible?

9)	And anyone else i might have missed.

Hope this helps those that were stuck like myself trying to get my phones true power unlocked!

***** NOTE!!!

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I'm not sure if its just me/my phone/everyone's phone but i have noticed while working to get adb to recognize my device my usb debugging would seem to not be working (adb devices). If anyone has some feed back about this problem i would love to hear. BTW my device is less then 2 months old.