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[Guide] Downgrade from 4.3 or 4.4 for root / Restore imei

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78triton
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Quote:
Originally Posted by blueether View Post
if you are flashing any of the custom roms (pac/CM/etc) the easiest way is to start with a .290 base the flash the boot.ing that is in the zipfile for the ROM either with flashtool or fastboot
  • Open archive with 7zip etc
  • only extract boot.img
  • copy boot.img to flashtool_dir/firmware/ (passably changing the name to reflect the rom it is from if you are likely to try many)
  • boot phone into fastboot mode (volume up while connecting to PC)
  • use flashtool (or quickimg) to flash boot.img via fastboot>select kernel to flash

That seems like the hard way to do it is the no way to just flash the zip. Its weird i can flash 4.4 roms but not 4.3 unless they are stock roms
doesnt that seem odd
 
NiCk.JaY
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(Last edited by NiCk.JaY; 15th February 2014 at 11:06 AM.)
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Never mind, got it
 
r351574nc3
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Default Can't get to Flashmode

I've been trying to use flashtool to flash the 290 ftf, but I can't. All I can do is flash the system.sin and userdata.sin in fastboot mode. I can't get to flashmode. When I plugin my usb cord and hold the Volume Down button, the LED just flashes from green to red and then turns off. The Flashtool acts like it got into flashmode, but then halts. It never gets passed 0%. It looks like I can't get into flashmode. I've tried everything. Any ideas?
 
blueether
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Yes the LED out in flash mode.
Can you post the output from flashtool when trying yo flash the ftf. Have you tried another ftf?

Sent from my Xperia Z Ultra using Tapatalk
Charles
Alcatel One Touch "easy" -> Nokia 1110i -> Alcatel ame-408 -> Motorola Razr v3 -> Huawei u8100 -> Sony Xperia Z-Ultra
 
alberto888zz
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(Last edited by alberto888zz; 25th March 2014 at 05:04 PM.)
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Quote:
Originally Posted by Reb0rn View Post
When I tried the first solution it did not work.

The second solution worked for me. However, I did wipe data or else cm10.2 won't boot.

1. Be on 290 with UL bootoader.
2. Flash boot.img from cm10.2
3. Enter recovery and factory reset.
4. flash cm10.2 and gapps.
5. Boot in to cm10.2 and ignore initial setup process. Just skip skip skip.
6. When in home screen, open phone and dial *#06#. If you see IMEI lots of zeros, your OK.
7. Now turn off phone and ftf .257 but exclude system and kernel. Uncheck wipe data.
8. Profit.
Still 0s IMEI after this guide and cm10.2-togari
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blueether
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Did you try the [NUT] way in the OP?

Does the IMEI return when on a stock 4.3 or 4.4 sony firmware?
Charles
Alcatel One Touch "easy" -> Nokia 1110i -> Alcatel ame-408 -> Motorola Razr v3 -> Huawei u8100 -> Sony Xperia Z-Ultra
 
alberto888zz
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Quote:
Originally Posted by blueether View Post
Did you try the [NUT] way in the OP?

Does the IMEI return when on a stock 4.3 or 4.4 sony firmware?
[NUT] not yet! It 's the second very long post?

Yes with 4.3 or 4.4.2 stock i have IMEI, and also with cm11-nightly!
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blueether
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Quote:
Originally Posted by alberto888zz View Post
[NUT] not yet! It 's the second very long post?

Yes with 4.3 or 4.4.2 stock i have IMEI, and also with cm11-nightly!
[NUT] made the FTF that is in Downgrade path 1 in the first post
Quote:
Downgrade path 1 (very easy):
Download needed files
Download C6833_14.1.B.1.532_NUT.ftf
Flashing using flashtool
Flash EVERYTHING in the above ftf by @[NUT]
Reboot

Flash EVERYTHING in this ftf, (use the defaults) it will do the downgrade below so you will end up on .532 with a working IMEI ready to root with bin4ry's tool
http://forum.xda-developers.com/devd...ct/dl/?id=3442
You will end up with a device that thinks it is a C6833 but when you flash 4.3 or newer (.290 or .136) just use the one for your real model and the model number will be restored.
It is quick and simple then just flash the newest 4.2 FTF if you want to use CM 10.2. If you are happy with CM 11 just stay as you are
Charles
Alcatel One Touch "easy" -> Nokia 1110i -> Alcatel ame-408 -> Motorola Razr v3 -> Huawei u8100 -> Sony Xperia Z-Ultra
The Following User Says Thank You to blueether For This Useful Post: [ Click to Expand ]
 
alberto888zz
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Quote:
Originally Posted by blueether View Post
[NUT] made the FTF that is in Downgrade path 1 in the first post


It is quick and simple then just flash the newest 4.2 FTF if you want to use CM 10.2. If you are happy with CM 11 just stay as you are
I have flashed back 4.4.2 stock, then C6833_14.1.B.1.532_NUT.ftf and now IMEI it's ok also with cm10.2

Thanks!
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Justin^Tan
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i downgrade using NUT ftf. and i'm in .532 now. i want to root using binary but i cant seem to root it
what method should i pick?

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