Post Reply

Sony Xperia Z Ultra NOT booting if any non-Sony ROM is flashed....

28th August 2014, 11:42 AM   |  #1  
OP Junior Member
Thanks Meter: 0
 
29 posts
Join Date:Joined: Oct 2011
Hola folks!

Thanks for taking time out to go through my post.

I have a Xperia Z Ultra with official Sony Kitkat FW 4.4.2. & it works absolutely fine. So I decide to go the CFW way in the following order:
- Use EasyRootTool v12.1 to root the phone.
- Install Recovery via ZU-lockeddualrecovery2.7.154-BETA.installer
So far so good.
Phone reboots into TWRP Recovery from where I installed (After clearing Dalvik cache et al) Candykat ROM. Note ONLY the ROM was flashed. I did not flash GAPPS or any other package ONLY the ROM & hope the phone would boot up.

This is where it gets bad...

- Phone refuses to boot up
- I see the notification/power/charging light now change color to a blinking Red

Anyways, I use FlashTool.exe (flashtool-0.9.16.1) & resurrect the phone, flashing a factory build FTF file (God bless them souls who created it!).

This time I do the whole process again & try CandyKat ROM. Same friggin problem!!! Am I doing something that is not correct? Am I supposed to unlock the bootloader? I checked the forums & everyone seems to be having a good time flashing them ROMs. What gives?

Any suggestions/recommendations are ever welcome.

Warm regards,
Aaron

*EDIT*
My phone is a C6802 model.
Last edited by aarmath; 28th August 2014 at 11:48 AM.
28th August 2014, 12:02 PM   |  #2  
maxld's Avatar
Senior Member
Flag Łódź
Thanks Meter: 209
 
1,138 posts
Join Date:Joined: Mar 2009
More
Flash non-Sony ROM, then unpack boot.img from the rom you have flashed, and flash it manually via fastboot or flashtool. I think that your phone is not booting because of wrong kernel.

Oh, and btw. This thread has nothing to do with development section, it should go to Q&A.
Last edited by maxld; 28th August 2014 at 12:04 PM.
28th August 2014, 12:12 PM   |  #3  
Senior Member
Thanks Meter: 604
 
1,673 posts
Join Date:Joined: Jan 2011
Yes you need to unlock bootloader before flashing non stock based roms. Be sure to back up your TA partition before you unlock.
The Following User Says Thank You to adfurgerson For This Useful Post: [ View ]
28th August 2014, 01:11 PM   |  #4  
maxld's Avatar
Senior Member
Flag Łódź
Thanks Meter: 209
 
1,138 posts
Join Date:Joined: Mar 2009
More
Quote:
Originally Posted by adfurgerson

Yes you need to unlock bootloader before flashing non stock based roms. Be sure to back up your TA partition before you unlock.

Exactly... How could I forget about that
28th August 2014, 03:33 PM   |  #5  
Member
Thanks Meter: 4
 
54 posts
Join Date:Joined: Feb 2009
And a kernel that works with the rom you will use

Sent from my C6833 using Tapatalk
28th August 2014, 03:55 PM   |  #6  
gregbradley's Avatar
Forum Moderator
Flag Manchester
Thanks Meter: 4,057
 
9,450 posts
Join Date:Joined: Mar 2011
More
Please post questions and help threads in the Q&A/Troubleshooting section

You will get answers and help much more quickly if you do

Thread moved
28th August 2014, 07:21 PM   |  #7  
blueether's Avatar
Senior Member
Flag Te Awamutu, New Zealand
Thanks Meter: 1,186
 
2,697 posts
Join Date:Joined: Jan 2011
Donate to Me
More
so what you have to do now is:

flash a FTF with flashtool to get a booting device again
root
reinstall dual recovery
backup TA
unlock bootloader
flash ROM

Post Reply Subscribe to Thread

Tags
blinking red light, booting, ultra, xperia
Previous Thread Next Thread
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes