Z1 Downgrade 4.4.2 to 4.3?

[PatrickB]

Hello together,

Just updated today to Android Version 4.4.2.

Now many errors occur. Is it possible to downgrade to 4.3?

This new version ruines this phone...

Thanks in advance for your help!

[nicetohave]

Hi Thommo,

please i need advise. My customization number is 1277-2880_R5C but I can only locate 1277-2880 on the ftf list, is it the same? can I use this to flash downgrade my z1 to 4.3? if not what do i do?

Please respond urgently, this kit-kat is really draining my battery life. 

thanks.

[Noxian]

just downgraded from 4.4.2 to 4.3

The phone had really slowed down compared to 4.3
Tons of Bluetooth problems garbled audio, disconnects, Bluetooth actually turning it self off.
Strange battery drain issues

I had to use flashtool and go back to 4.2 using a rogers FTF, then upgrade to 4.3.

Since my phone was encrypted I lost everything and have to sync everything back up with google and copy everything over.

Not sure if I will be downgrading my girlfriends phone hers she has alot of custom settings I wouldn't want her to have to redo but she is always complaining about the Bluetooth also.

My family has 3 Z1s and we are all very disappointed with 4.4.2.

[shadowblack]

hello. sorry for my very bad english, i live in uruguay and speak spanish.

I bought my sony z1 c6902 in paraguay but z1 is brought from another country and after 5 dias started to fail. first the phone restarted and not turned off, had heating problems and consuming battery, I had to turn it off with the reset button. the phone worked fine after a few days, upgrade it to android 4.3 and it worked well but began to fail after a few days not turn on wifi. upgrade it to android 4.4 but the error still and did not recognize my sim card, the battery is spent very quickly in less than 6 hours.

has android 4.4.2

number of compilation 14.3.A.0.757

customization version and active customization 1276-3106_R4C

also says phone software version, generic user, file system version global HSPA, S1 boot version, ets software version, LTA version, content number, type number

if anyone know how to solve these problems or I have to install to downgrade because in the list is not the same number of customization version.

I want to go back to android 4.3 or 4.2.

every time I turn the phone asks me to select the language

i restore the factory settings and update it again but still the same errors

thanks

[anishkhanna]

I want to downgrade my xperia zr from 4.4.2 to 4.3 please help, so that i can again update to 4.4.4

[shoko]

1269-5309_10.5.1.A.0.283 thats ma version wat ftf file should i download?

[shoko]

I jave updated my experia Z phonr to 4.4.2 kitkat now this **bleep**ty error : Unfortunately the process.android. Stopped, comes everytime and i cant even open my album or Walkman, plzzz tell me wat to do, i cant even connect it to my computer

[Thommo]

Try performing a system repair as this will often fix issues after an upgrade - This will factory reset your phone

Switch off your phone and unplug from Pc (Hold volume up and power for around 10 seconds)
Start PC Companion and select Support zone then Update my phone/tablet then in Blue Repair my phone/tablet and follow the onscreen instructions - When prompted connect your phone still switched off holding volume down or back button - This should start the repair or reformat process

If you are using Windows 8/8.1 or a 64bit operating system then adjust the settings for PC Companion and run in compatibility mode and chose Windows 7 or XP

[shoko]

Wow tnx alot for the quick reply lemme do.that nd I'll tell u if it worked