[STOCK-ROM] [LB/UB] [4.4.4] [Pre-Rooted] C6603 10.5.1.A.0.283 GenericDE DualRecovery

[ceLsiuZ]

Hi folks

To give something back to the community that always helps other users through countless useful roms, tipps and tweaks, I decided to make the ROM available that I just created to update my Xperia Z to the newest firmware version - Android 4.4.4 10.5.1.A.0.283. I was really annoyed from the bugs (laggy settings menu, battery drain, etc.) of the previous official 4.4.2 ROM, but this one - up to what I experienced until now - really runs like a charm again.
The creation of this firmware was no rocket science and probably most of you could have done it on your own. However, providing the ROM to you may save you some time and enables you a hussle-free update process since you don't have to combine all those tools like SuperSU and Dual Recovery on your own.

Here some facts:

• Based on: Official 10.5.1.A.0.283_GenericDE for C6603 (obtained from here, thanks @AlexX-DE)

• Pre-rooted using latest SuperSU v2.02 (obtained from here, thanks @Chainfire)

• Latest Dual Recovery 2.7.154 Beta included (obtained from here, thanks @[NUT])

• Flashable firmware file created using PRFCreator v0.5 (obtained from here, thanks @zxz0O0)

• For your information: I came from this firmware from @[NUT] when installing this update.

To install this firmware:

1. Download this ZIP file
2. Extract it
3. Open the extracted folder Pre-Rooted_C6603_10.5.1.A.0.283_Generic_DE_DualRecovery
4. Connect your Xperia Z to your computer
5. Copy the flashable.zip onto your SD card
6. Disconnect your Xperia Z from your computer and turn it off (remember to have it charged to at least 50-70% battery power prior to flashing the firmware)
7. Boot into one of your existent recoveries - CWM or TWRP (I used TWRP)
8. Install the flashable.zip located on your SD card, wait for it to be successfully finished
9. (optional Clear cache/dalvik (I did it)
10. Reboot
    
11. IMPORTANT: Now wait! The reboot can take up to 10 minutes and eventually the screen might keep black showing nothing at the first startup.
    When I flashed this firmware the first time and rebooted afterwards, it rebooted and vibrated, but the screen did not turn on for at least 5 minutes and I already thought I bricked it. But just when I started to panic and smash my head against the wall, the screen suddenly turned on and everything was perfectly fine again. It seemed that there was just a slight problem initializing the display for the first time after the flash while booting up and optimizing the apps (you know this process can take quite long, depending on how many apps are installed).
    I tried to reproduce this error flashing the firmware again but I couldn't. After the next flash the screen worked fine even when starting the newly flashed firmware for the first time.
    So remember, please don't panic when the first startup might take long and the display shows nothing as this is most likely only a temporary condition.

Nevertheless, I of course don't take responsibility for any potential damages or bricks that may be caused using this firmware, although I don't see major risks since it is the official release and I did not change anything at this firmware. Everything you do is on your own risk!

I know there is also a similar release by @luala, but he based his firmware on the swedish SG firmware, mine is based on the german generic DE firmware, so probably of special interest for people from Germany.

In case of any problems or questions, please ask here. Even though I'm no professional developer I'm sure we will find a solution.

If this post was useful to you, please show it by clicking Thanks!
Wish you a lot of fun with your lag-free Xperia Z running on 4.4.4!

ceLsiuZ

@ Mods: Please move to the Development forum if more appropriate, I unfortunately couldn't post there.

 

[androidfreak70]

You should move this to the development section

TapaTalked from my MultiROM Xperia™ Z (C660²) running Dirty Unicorns OR PAC MAN ROM!

 

[ceLsiuZ]

Yeah I wanted to, but I couldnt since I did not have 10 posts yet.
So I guess a moderator would need to do that...

Best regards
ceLsiuZ

 

[auricgoldfinger]

Installed

Belgium speaking, I flashed it with CWM recovery, cleared cache and had no black screen delay: phone booted immediately.
Thank you a lot, I'm going to test it now

 

[ceLsiuZ]

Belgium speaking, I flashed it with CWM recovery, cleared cache and had no black screen delay: phone booted immediately.
Thank you a lot, I'm going to test it now

Haha, hello Belgium, that's very good to hear and thanks a lot for sharing your experience!
And, how's the test going?

I'm not quite sure, but could it be that the battery management is not the best again? It's quite misleading, cause after flashing one always tends to using the phone more extensively than before, but somehow I got the impression that the power usage of "Android System" and "Android OS" is relatively high.
But as I said, my impression might be quite subjective - what do others say?

 

[Magguz]

Hi,

flashed it and Xperia stays in black screen.

Had to flash the original ftf file and root it by myself.

But now I dont know which recovery works with 4.4.4 ^^
Have to find it now ^^

 

[Arrowblue]

if you are rooted, Than install Flashtool and find Advanced stock kernel and flash it, you have your recovery. or try doomlord cwm recovery.

 

[imm1304]

Thank you very much for this. I needed something like this because my C6616 doesnt have official 4.4.4 so far.
I followed your instructions and had no problems at all.

 

[neger-t]

Thank you very much for the file.
Flashed it through CWM, only wiped cache after and worked perfectly! only issue I had was a missing baseband directly after rebooting but that was fixed after the second reboot (or just some time waiting).
Came from eXistenZ Ultimate 1.5.5

 

[saphos]

It worked!

Hi,

thanks to celsiusZ !!

I just flashed with TWRP, wiped cache/dalvik cache, rebooted. No black screen, reboot took about 2 minutes. All seems to work!

Greetz!

 

[cyberbeam]

Danke!

I also flashed it on a pre-rooted phone (with locked bootloader) with t-mobile Austria branding using TWRP without any problems.
The phone is still rooted, SuperSU still works, as does TWRP.

Even after a factory reset everything works fine.

thx!

 

[mir2ruso]

Nice thanks, perfect found on my Z :good:

 

[oskarhds]

Thank you very much for this. I needed something like this because my C6616 doesnt have official 4.4.4 so far.
I followed your instructions and had no problems at all.

Man I have the C6616 and it was officially updated to 4.4.4 , but I don't know how to root my phone, do you know how to do that? Thanks

 

[allendj81]

So this is safe to flash on the C6606 TMO USA? I'm on the stock 4.3 firmware and not rooted and locked

 

[EmeraldTimer]

do i have to do something other if i come from 5.0 AOSP?
except format data

 

[imm1304]

Man I have the C6616 and it was officially updated to 4.4.4 , but I don't know how to root my phone, do you know how to do that? Thanks

Hi, just saw this message late. For me, the best route was to root the bell 4.4.2 I was on using the towelroot.apk and then flash the pre rooted latest rom. I remember 4.4.4 root being more complicated as outline here in the forums so I decided to skip that route.

 

[xperiaXD]

Hi need help

I flashed your rom, im successful at doing it but, i cant use gplay and i cant hard reset my phone, i just want to ask if u can help me with it? And if i use the companion to repair the software it will be back at bsod state, sorry for the grammar TIA