I tried to downgrade the Z1 from 4.3 to an older version (537) so that I can root it and then update to 4.3 back. But every time i downgrade, Z1 is unable to detect my sim card. The only way to fix this was to use the software repair option in PC companion and upgrade directly to 4.3. Anyone else faced this issue.?
ravi_buz said:
I tried to downgrade the Z1 from 4.3 to an older version (537) so that I can root it and then update to 4.3 back. But every time i downgrade, Z1 is unable to detect my sim card. The only way to fix this was to use the software repair option in PC companion and upgrade directly to 4.3. Anyone else faced this issue.?
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Click to collapse
Yes it has been mentioned, but you cannot get root on 4.3 that way anyway.
Just update back to 4.3 to fix it
If you flash 4.2.* rom, then reflash it, could be fine.
Related
This is for my curiosity and many other users who I know are wondering the same thing, I've searched for this, but can't really find anything that answers it to my satisfaction.
So I'm running 4.3, with build number .290
I want to root my phone, but I know I need to flash .534 back to my phone. As far as I know, THIS will stop my sim being recognised by the phone. Do I then need to ROOT the phone, and then flash .290 again for the sim to work again.
So which .290 flash will I use? Just the normal FTF file for .290?
Thank you, I'm an active contributor to the forum, but I like to be super sure about what I'm doing before I do it, and I gather many other users do. The reason I'm asking in such detail is because my phone was rooted before, I updated (by mistake) to 4.3 and then flashed back to .290 where it stopped my sim working. Took me a few hours to work out how to fix it, as the pccompanion wasn't working for me!
Thank you!
TagEHeuer said:
This is for my curiosity and many other users who I know are wondering the same thing, I've searched for this, but can't really find anything that answers it to my satisfaction.
So I'm running 4.3, with build number .290
I want to root my phone, but I know I need to flash .534 back to my phone. As far as I know, THIS will stop my sim being recognised by the phone. Do I then need to ROOT the phone, and then flash .290 again for the sim to work again.
So which .290 flash will I use? Just the normal FTF file for .290?
Thank you, I'm an active contributor to the forum, but I like to be super sure about what I'm doing before I do it, and I gather many other users do. The reason I'm asking in such detail is because my phone was rooted before, I updated (by mistake) to 4.3 and then flashed back to .290 where it stopped my sim working. Took me a few hours to work out how to fix it, as the pccompanion wasn't working for me!
Thank you!
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Click to collapse
why don't you unlock your 4.3 rom and flash a recovery to root it ? would be easier
AntiDroid said:
why don't you unlock your 4.3 rom and flash a recovery to root it ? would be easier
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Click to collapse
Not really used to that, new to all this. A guide somewhere?
Look here,
http://forum.xda-developers.com/showthread.php?p=48902196
sent from a Rooted & Unlocked Xperia Z1
TagEHeuer said:
Not really used to that, new to all this. A guide somewhere?
Click to expand...
Click to collapse
If you want to flash the firmware you have, follow this guide from part B to part C, then you will have a ftf copy of your current firmware.
About the root thing, downgrade to .257 then .534 so you don't have the IMEI and signal issues. Then root and OTA to .257 and then, if you get OTA update to .290 go for it, but some people said that you will only get partial root access.
So you will have to either flash a prerooted firmware or unlock bootloader and turn off Sony's RIC and then root the normal way.
To unlock bootloader, just follow the instructions here but don't forget to backup the TA partition using this guide.
Regards,
~J2C
Hello,
I recently bricked my Z1 and just got it back from warranty repaired. It is a C6906 that they upgraded to 4.3 (.290) however it is branded to BELL and I wish to flash the unbranded generic so I don't have as much bloatware/fast updates.
Since I do not wish to brick the device again and go through this again and so I am looking for advice to do this in a way that is guaranteed. With flashtool if I flash "C6906 14.2.A.0.290 Generic CA 1276-7484_R2B" would I have any issues at all? Just load up Flashtool - select the ftf and just use the default settings and plug in the Z1 while holding down the volume button.
I used the latest Flashtool v0.9.13, connected to PC, let install windows the drivers, selected the Unbranded Stock ftf, wiped all data, appslog, cache, all the rest unchecked and I performed the flash. All fine and the phone working well. I don't know why you had problems or why you bricked the phone but there is no advice to give you because it's simply. So even if all it's clear no guarantee and it's up to you. I don't think is the FTF faulty.
eclyptos said:
I used the latest Flashtool v0.9.13, connected to PC, let install windows the drivers, selected the Unbranded Stock ftf, wiped all data, appslog, cache, all the rest unchecked and I performed the flash. All fine and the phone working well. I don't know why you had problems or why you bricked the phone but there is no advice to give you because it's simply. So even if all it's clear no guarantee and it's up to you. I don't think is the FTF faulty.
Click to expand...
Click to collapse
This is separate from how I bricked it (using custom rom), I did this previously with a older version and just not on .290 and I am wondering if there is any issues (IMEI etc) doing it .290 to .290, thats all. I just don't want to make a mistake.
magwart said:
This is separate from how I bricked it (using custom rom), I did this previously with a older version and just not on .290 and I am wondering if there is any issues (IMEI etc) doing it .290 to .290, thats all. I just don't want to make a mistake.
Click to expand...
Click to collapse
Ok, so you bricked the phone with custon rom, now I understand. In this case there is no any issues flashing .290 unbranded on .290 branded. IMEI is lost only when jumping .257 and downgrade directly to .534. It's more "safe" flash .290 on .290. Go flash now.
eclyptos said:
Ok, so you bricked the phone with custon rom, now I understand. In this case there is no any issues flashing .290 unbranded on .290 branded. IMEI is lost only when jumping .257 and downgrade directly to .534. It's more "safe" flash .290 on .290. Go flash now.
Click to expand...
Click to collapse
Thanks. I don't suppose there is any working root for 4.3 yet, is there for the C9606?
Edit: Successfully flashed. Thanks again.
magwart said:
Thanks. I don't suppose there is any working root for 4.3 yet, is there for the C9606?
Click to expand...
Click to collapse
No direct root, like Vroot or 360, for .290 at the moment, just a method to get full root for Locked Bootladers. To do that you have to downgrade, root, install recovery then update to .290 again, a bit longer to get root on your phone, sure this method working for C6902/3 but should work for C6906 too, just check.
Would I be able to go from 290 branded to the new 136 intended without issue? I already bricked one device trying to root and I'm just trying to make sure lol
akusokuzan said:
Would I be able to go from 290 branded to the new 136 intended without issue? I already bricked one device trying to root and I'm just trying to make sure lol
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Click to collapse
Probably because when you bricked your phone was the time when some issues was not discovered yet in do that, and this confirm the fact on the thread now is wrote "How not brick your phone" . BTW, the risk to brick the phone is in downgrading so if you want just to upgrade without Root this way should be more "safe" and you will be able to do it without any issue.
eclyptos said:
Probably because when you bricked your phone was the time when some issues was not discovered yet in do that, and this confirm the fact on the thread now is wrote "How not brick your phone" . BTW, the risk to brick the phone is in downgrading so if you want just to upgrade without Root this way should be more "safe" and you will be able to do it without any issue.
Click to expand...
Click to collapse
Lol yeah, when I was trying to update with root, it didn't go so hot. That thread wasn't stickied until after the debacle. Sounds good though, thanks!
My phone has OS 290 need to downgrade to 257 to root but the file doesn't show up in flashtool i downgraded to 534 before but lost IMEI so went back to 290
Follow NUT's thread in Android Development section in order to root your Z1.
Sent from my C6903 using XDA Premium 4 mobile app
ryanraven said:
My phone has OS 290 need to downgrade to 257 to root but the file doesn't show up in flashtool i downgraded to 534 before but lost IMEI so went back to 290
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Even I am facing this issue. The flashtool does not seem to recognize .257 at all. Not sure on the reason.
Gurus - Any idea on why the flash tool is not recognizing .257?
@livelyyoungman, @ryanraven Use the FTF .534 provided by NUT to avoid IMEI lost, then follow the instructions to upgrade to .290. Read carefully the thread.
Even I had lost the IMEI when I flashed wrong firmwares 534 rom.
you need to flash .534 based on your firmware c6902 or c6903 or whatever it is. Root your phone and then use nut tutorial to upgrade and keep the root.
Losing IMEI is not even a problem at all because when you will update to .290 or .136 it will be back so do not be worry about it.
matharuajay said:
Even I had lost the IMEI when I flashed wrong firmwares 534 rom.
you need to flash .534 based on your firmware c6902 or c6903 or whatever it is. Root your phone and then use nut tutorial to upgrade and keep the root.
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Click to collapse
I flashed the correct firmware. The one I used was C6902_14.1.G.1.534_Generic IN firmware that I downloaded from the link provided in this forum (MEGA link). Excluded "Baseband" as well. Still IMEI went missing
eclyptos said:
Losing IMEI is not even a problem at all because when you will update to .290 or .136 it will be back so do not be worry about it.
Click to expand...
Click to collapse
I was not worried on this, as I did read about the issues on downgrading and was fully aware that by flashing to the latest version I would be getting back the IMEI.
Now I have successfully downgraded to .534 as well - just flashed first the global .257 and then the generic IN version of .534. All is well now. Was able to root the phone as well. But now I am facing camera issues; may be a visit to the service center is what seems looming @ large.:crying:
livelyyoungman said:
But now I am facing camera issues; may be a visit to the service center is what seems looming @ large.:crying:
Click to expand...
Click to collapse
If you unlocked bootlader then with .534 or .257 the camera not working, update to .290 or .136 and your camera will be back again.
eclyptos said:
If you unlocked bootlader then with .534 or .257 the camera not working, update to .290 or .136 and your camera will be back again.
Click to expand...
Click to collapse
No I have not yet unlocked the BL. But I find the following issues when using the camera:
1. "Camera Not Available" message appears sometimes. It does disappear but upon taking photos after this message a BLUE hue is visible at the bottom of all the pictures I shoot. Only a reset restores the camera function properly.
2. The phone keeps rebooting at least once every day.
I was reading few of the other posts and find that these two could be related to HW malfunction. Hence wanted to visit the service center to figure out the process for replacing the phone. I have already visited the service guys early last week for these two issues. They flashed my mobile once again and returned back to me for checking. :crying:
A factry reset in needed after update. If you are not on latest FW then update.
eclyptos said:
A factry reset in needed after update. If you are not on latest FW then update.
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Click to collapse
Yes did that as well. But still it does re-appear. So just wanted to confirm if there is really any hardware issue with my piece.
livelyyoungman said:
Yes did that as well. But still it does re-appear. So just wanted to confirm if there is really any hardware issue with my piece.
Click to expand...
Click to collapse
Then something wrong. Call Sony to understand if you should sent it back.
I want help regarding installing 4.4 in my z1 c6902..
I have rooted and unlocked bootloader...
I made changes in system/app
what to do to receive 4.4 via ota via sony....
BUT MY SONY PC COMPANIAN IS READING MY DEVICE AND SHOWING UPDATE..WILL I UPDATE OR NOT??
pathanraj said:
I want help regarding installing 4.4 in my z1 c6902..
I have rooted and unlocked bootloader...
I made changes in system/app
what to do to receive 4.4 via ota via sony....
BUT MY SONY PC COMPANIAN IS READING MY DEVICE AND SHOWING UPDATE..WILL I UPDATE OR NOT??
Click to expand...
Click to collapse
Even though PC Companion is showing that your phone has an update, if you try to perform the update, you will get an error that the software has been modified (because of unlock bootloader) and you cannot proceed.
If you want to update a phone with unlocked bootloader, you need to use Sony Flash tool.
Note that updating via PC Companion or Sony Flash tool, will result in your root being lost.
hush66 said:
Even though PC Companion is showing that your phone has an update, if you try to perform the update, you will get an error that the software has been modified (because of unlock bootloader) and you cannot proceed.
If you want to update a phone with unlocked bootloader, you need to use Sony Flash tool.
Note that updating via PC Companion or Sony Flash tool, will result in your root being lost.
Click to expand...
Click to collapse
Where can i get file to flash with flash tool for my z1 C6903
Thanks in advanced
Look in the general section,
There is a sticky thread (Meaning its always near the top) full of the FTFs....
I'm facing problem with OTA update from 14.5.A.0.242 to.......... 270
It said could not verify update. My Z1 is already rooted and BL locked. Thanks.
brangmai said:
I'm facing problem with OTA update from 14.5.A.0.242 to.......... 270
It said could not verify update. My Z1 is already rooted and BL locked. Thanks.
Click to expand...
Click to collapse
Had similar problem and tried downloading rom from companion app. But now suddenly it says phone up to date while i still have .242
You means updating with pc companion is ok? Anyway I want update. :'(
brangmai said:
I'm facing problem with OTA update from 14.5.A.0.242 to.......... 270
It said could not verify update. My Z1 is already rooted and BL locked. Thanks.
Click to expand...
Click to collapse
it does this because you have altered system file (i.e. root and/or recovery)
Hi,
Try updating from PC Companion software, it won't take much a time if you have a good internet connection. Keep in mind you'll lose root and OTA failed very likely due to a modified system partition (root).
All the best,
~Lord
XxLordxX said:
Hi,
Try updating from PC Companion software, it won't take much a time if you have a good internet connection. Keep in mind you'll lose root and OTA failed very likely due to a modified system partition (root).
All the best,
~Lord
Click to expand...
Click to collapse
Thanks. I have updated with stocked pre rooted firmware. Everything is ok and waiting for upcoming update.