Database Develop

[Q] How to downgrade from Android 4.4.2 to 4.1.2

Hello guys. Anyone knows how to downgrade my Xperia Z? I've upgrade it to Kitkat 4.4.2. But it seems that 4.1.2 is better for Xperia Z. Kitkat 4.4.2 is quite lag. Specially on HD Games. Please help me guys. Thanks!

WinchyHanepp said:
Hello guys. Anyone knows how to downgrade my Xperia Z? I've upgrade it to Kitkat 4.4.2. But it seems that 4.1.2 is better for Xperia Z. Kitkat 4.4.2 is quite lag. Specially on HD Games. Please help me guys. Thanks!
Click to expand...
Click to collapse
download 4.1.2 ftf and flash it using flashtool

Thanks
androidtweaker1 said:
download 4.1.2 ftf and flash it using flashtool
Click to expand...
Click to collapse
Just flash the 4.1.2 firmware? No other things to do before flashing?

WinchyHanepp said:
Just flash the 4.1.2 firmware? No other things to do before flashing?
Click to expand...
Click to collapse
Just untick data wipe in flashtool

WinchyHanepp said:
Just flash the 4.1.2 firmware? No other things to do before flashing?
Click to expand...
Click to collapse
Backup you data to make sure to not loose them
Xperia™ Z (C6602) with Tapatalk.

OP's issue is solved.

Downgrade your Phone to Jélly Bean
To do that, simply check, if you are able to do that, first.
You can do that by typing the Telephone Number „*#*#7378423#*#*"
Then tap on „Service Information" and go to the Configuration.
After that you've got to go to unlockbootloader[dot]sonymobile[Dot]com to get your Unblock-ID, also-called Unlock-Key.
Accept the terms and Confirm, if you're REALLY SURE!

Hannah Stern said:
To do that, simply check, if you are able to do that, first.
You can do that by typing the Telephone Number „*#*#7378423#*#*"
Then tap on „Service Information" and go to the Configuration.
After that you've got to go to unlockbootloader[dot]sonymobile[Dot]com to get your Unblock-ID, also-called Unlock-Key.
Accept the terms and Confirm, if you're REALLY SURE!
Click to expand...
Click to collapse
Bootloader unlock is not required to flash stock rom.
Xperia Z shipped with Jellybean so he has to download jellybean FTF and flash it using flash tool.
As I have posted above the issue is already solved.
The procedure you have mentioned is required for flashing CUSTOM roms

[Q]XZ downgrade from 4.4 to 4.3

Is it possible on a locked bootloader? If so, do i just flash the 4.3 tft on 4.4 rom or do i have to go through a special procedure.

shad0wboss said:
Is it possible on a locked bootloader? If so, do i just flash the 4.3 tft on 4.4 rom or do i have to go through a special procedure.
Click to expand...
Click to collapse
yep bro just flash 4.3 ftf and wipe everything

Just flash the 4.3 ftf with flashtool !
Read/search before open a new thread with 1 simple question !!!! -__-
Send from my XZ With My Own Personal Modified MoonWalker SuperB !

[Q] Z1 android 4.2.2 can not update to 4.4.4 up

I got the problem that I can't update firmware for my Xperia Z1 ,
just need to update to 4.4.4 from 4.2.2, help it , please.
below the information：
CDA：1277-1348 , commercial and journalists
Firmware is 14.1.G.2.257(Android 4.2.2), can not update by PCC( no updating message)
it as possible as not use to Root.

KaMeiLiN said:
I got the problem that I can't update firmware for my Xperia Z1 ,
just need to update to 4.4.4 from 4.2.2, help it , please.
below the information：
CDA：1277-1348 , commercial and journalists
Firmware is 14.1.G.2.257(Android 4.2.2), can not update by PCC( no updating message)
it as possible as not use to Root.
Click to expand...
Click to collapse
hi, did you unlock your bootloader before? if yes, then relock it. Or flash a .157 (Latest 4.4.4) via flashtool.

yoorie016 said:
hi, did you unlock your bootloader before? if yes, then relock it. Or flash a .157 (Latest 4.4.4) via flashtool.
Click to expand...
Click to collapse
according to your reply,
1. if I use flash a.157(latest 4.4.4) via flashtool , the problem will be solved , right?
2. my CDA：1277-1348 , commercial and journalists , can I flash other CDA？
Sorry for asking these questions , I am rookie for flashtool
and thanks for replying me!!

KaMeiLiN said:
according to your reply,
1. if I use flash a.157(latest 4.4.4) via flashtool , the problem will be solved , right?
2. my CDA：1277-1348 , commercial and journalists , can I flash other CDA？
Sorry for asking these questions , I am rookie for flashtool
and thanks for replying me!!
Click to expand...
Click to collapse
It's perfectly fine! Just follow the steps in flashing FTF properly.
or follow this link, which you can download any FTF easily.

yoorie016 said:
It's perfectly fine! Just follow the steps in flashing FTF properly.
or follow this link, which you can download any FTF easily.
Click to expand...
Click to collapse
thanks a lot!! I just completed for updating Z1 to 5.0.2 from 4.2.2 last Sat.
thanks again!!!!

Downgrade from Lollipop to KitKat

I already did a search but got results for different phone brands ie. samsung etc but nothing for sony, please help me out for the same i am using rooted xperia z ( http://forum.xda-developers.com/xperia-z/development/rom-cyanogenmod-12-unofficial-t2975458 ) using this rom, which is lollipop want to downgrade to kitkat. please help

reflash stock ftf 4.4.4

Paduretu Ionut said:
reflash stock ftf 4.4.4
Click to expand...
Click to collapse
can you explain a step by stem guide ? or any link where i can find the same ?

How to package and flash stock roms in FTF format.
Sent from my C6603

hello
gaganailawadi said:
can you explain a step by stem guide ? or any link where i can find the same ?
Click to expand...
Click to collapse
hi i found this video on youtube it helped me to downgrade back to kitkat 4.4.4 https://www.youtube.com/watch?v=F2HIYpeZaTM

Someone please help
I cant find stock 4.4.4 firmware for my xperia zl c6506

fermtz09 said:
I cant find stock 4.4.4 firmware for my xperia zl c6506
Click to expand...
Click to collapse
Download from here
http://firmwaremobile.com/index.php/xperiadownload/file/270-zl

Help pls blackscreen after flashing any rom xperia z c6603

Pls someone help me, i reflashed my stock rom on my xperia z c6603 but after i flashed the rom it always been on a blackscreen, any rom i flash it still does that, except lineage os, sorry for grammar mistakes TIA

Hello you have test flash firmware 4.2.2 with flashtool ?

xrenoix said:
Hello you have test flash firmware 4.2.2 with flashtool ?
Click to expand...
Click to collapse
I didnt, do we have that here? Because in flashtool its only version 5.1.1 android