so i have rooted xperia arc. noticed that there were new update (4.0.2.A.0.42). so i resetted to default settings cause otherwise it wouldnt let me install that update, then after about 5 mins of updating arc shutdown and now it wont turn on.. so i ask what should i do?
was your arc bootloader unlocked when you did this?
When your BL is locked, just flash it via SEUS.
yes, bootloader was unlocked.
thank you for quick replys
There is a fix in the sticky's
For future only people who unlocked with setool can update via FOTA, SEUS and PC Companion.
Unless you relock your bootloader
Jinx13 said:
There is a fix in the sticky's
For future only people who unlocked with setool can update via FOTA, SEUS and PC Companion.
Unless you relock your bootloader
Click to expand...
Click to collapse
that was usefull! thanks, only problem now is that it wont connect to pc cause pc cant install "s1boot download".
You follow the link in the tutorial closely? Needed drivers are in the flashtool directory
found them but dont really know which one i need or where to put..
edit: now that flash started but it tells me to turn debugging and uknown sources on... but how cause i cant turn that even on
edit2: after reading almost full sticky thread tried that xperia play firmware which someone said it worked, now when i try to turn it on green led blinks.. is my phone piece of junk now?
so anyone know what should i do? it wont turn on, green led blinks when i press power button, phone vibrates when i press menu button (to start fastboot).
In Android Developement of Arc is a sticky with a fix for FOTA bricked phones, just do that
Sent from my LT15i using XDA Premium App
If you are still stuck I can repair it contact me via PM as i'm not allowed to discuss it on the forum
Taken from [Tutorial] Xperia S/P/U/Sola Bootloader Unlocking & Relocking and modified slightly for the ion. I take no credit for this tutorial.
Quick tutorial for unlocking & relocking the bootloader of the Xperia ion.
This is the official way to unlock bootloader
Warning!
This procedure will wipe the /data partition of your phone, so you will loose all ur stored data, settings. SDCARD will NOT BE WIPED!!!
DRM keys WILL be lost forever
Why should I unlock the bootloader?
You can flash custom ROMs/Kernels.
You don't need to worry if the new firmware can be rooted or not as with unlocked bootloader you can always ROOT your device.
SE/Sony gives sneak-peaks/preview builds of latest OS which requires unlocked bootloaders, as they did with Xperia 2011 line (they had ICS alpha/beta), so who knows may be SE/Sony may give early builds of ICS (JellyBean???)
Most of this is taken from lollylost100's his tutorial from ARC thread (all credits for that concise tutorial go to him, i have elaborated on a few things and added device specific changes)
[ Before we begin unlocking bootloader ]
Get the IMEI code for your device: type *#06# in phone dialer to find it out, note only the digits (no dashes)
Download the fastboot package with usb drivers (alternate drivers if the ones in package dont work)
Make sure u have a windows PC with USB cable to connect the phone
Power down your phone and keeping the Volume Up button pressed connect the USB cable to PC this will trigger FASTBOOT mode and windows will start driver installation, extract the above package and point the driver install to that location (usb_driver) folder
Once drivers are installed just disconnect cable and power on device
[ how to unlock ] (official way)
Go to: http://unlockbootloader.sonymobile.com/ and read everything!
At the bottom click 'Start Unlocking the Bootloader'
First, you should confirm that it is possible to unlock the boot loader of your phone by checking the service menu. In your phone, open the phone dial pad and enter *#*#7378423#*#* to access the service menu.
In your phone, tap Service info > Configuration > Rooting Status. If Bootloader unlock allowed says Yes, then you can continue with the next step. If it says No, or if the status is missing, your device cannot be unlocked.
Click to expand...
Click to collapse
After you have verified that you can unlock bootloader, scroll to the bottom of the page and click "Continue"
You will get "Are you sure prompt" accept it by clicking "yes i am sure" (i assume that you have read an understood it)
Then accept the "legal terms"
Finally you will get a "Create Unlock request" page, enter your IMEI (sometimes the last digit needs to be removed for this to work), name and email address
You should now receive your unique unlock key, its displayed on screen, SAVE THIS KEY SAFELY
Extract fastboot_with_Android_USB_file.rar and open fastboot folder
Hold SHIFT and right click on the background of the folder
Select 'Open command window here'
Connect your phone in fastboot mode (turn phone off, hold Volume UP button and plug in USB Cable) [make sure drivers are installed as explained above)
In the cmd windows type in fastboot.exe -i 0x0fce getvar version
If a value is returned (it will return 0.5), it means the phone is correctly connected
Type in fastboot.exe -i 0x0fce oem unlock 0xKEY and replace KEY with the key which you received earlier.
Your device should now be bootloader unlocked
If this tutorial is too much for you then itskapil wrote a step-by-step guide (and recorded a video also):
-Instructions: http://www.theandroidsoul.com/how-to...-play-neo-pro/
-Video: http://www.youtube.com/watch?v=LRH3pC7MhEA
(the above videos and some steps are for Xperia 2011 devices, but most the steps are same for Xperia ion)
Info on Relocking bootloader is in next post
Relocking bootloader
RELOCKING BOOTLOADER WILL ALLOW YOU TO GET NEWEST UPDATES & REPAIR DEVICE USING SEUS/PCC
Before we begin relocking the bootloader make sure that u have flashtool download & installed
You can get the latest version of FlashTool from:
http://androxyde.github.com/Flashtool/
Download link is under "Installation" tab
If you have not use FlashTool before read this thread:
http://forum.xda-developers.com/showthread.php?t=1526866
Download this FTF:
Xperia ion -> LT28-ION_Relock_bootloader_Dogsly-TEST.ftf // Mirror 1
Flash this FTF via FlashTool:
When it says enter flashmode, power down device and keeping VOLUME DOWN button pressed connect usb cable to phone, the device will now enter flashmode (green LED)
After this file is flashed reboot phone
Bootloader will now be relocked!!!
Incase device doesn't boot DO NOT PANIC... You can flash stock firmware FTF anytime to get back to stock ROM
P.S.: there is no official way to relock bootloader
So because my phone says I can't unlock the bootloader, does that mean I can never unlock the bootloader? Or do I have to wait to be able to root it first?
PS: I got my ion from Best Buy so is that why? Will I ever be able to unlock the BL ? I've rooted and unlocked my x10, back in the old days lol but I'm just wondering if there's any difference with getting a phone from at&t directly or from the sony store and best buy.
Auggy99 said:
So because my phone says I can't unlock the bootloader, does that mean I can never unlock the bootloader? Or do I have to wait to be able to root it first?
Click to expand...
Click to collapse
Have to wait to see if another way to unlock the bootloader is discovered. Root and unlocking the bootloader are two different things that accomplish or allow different things you can do on the phone.
IE rooting allows you to uninstall system apps & bloatware, backup apps/data, make changes to build.prop etc. Unlocking the bootloader will give you access to fastboot so you can flash custom roms/kernels and other images such as a pre-rooted system image to gain root.
I wonder. If we can not unlock the bootloader for some LT28at, why is there a key to unlock it? I did the Sony bootloader unlock for fun and apparently they have a key for my LT28at even though it says bootloader unlock is not allowed.
Bach415 said:
I wonder. If we can not unlock the bootloader for some LT28at, why is there a key to unlock it? I did the Sony bootloader unlock for fun and apparently they have a key for my LT28at even though it says bootloader unlock is not allowed.
Click to expand...
Click to collapse
You can unlock bootloader on the LT28i and, accordingly, there is a file to be relock bootloader LT28i
dogsly said:
You can unlock bootloader on the LT28i and, accordingly, there is a file to be relock bootloader LT28i
Click to expand...
Click to collapse
I understand that works for lt28i but I'm referring to lt28at the us model of the ion and why there is a bootlloader unlock code when we can't unlock it.
see if it works
Has anyone with an ion that has
Bootloader unlock allowed says Yes
Click to expand...
Click to collapse
tried to unlock it via the sony site and if you did and it was successful have you tried to relock it using the file linked above? Would be nice to know if that works.
Possible fix?
If the LT28i can be unlocked, what if we flash the international firmware on our LT28at's and then do the LT28i method? Maybe a stupid question but this is the first phone I've had that's a challenge to do stuff like unlocking and rooting. My last phone (HTC Aria) was extremely easy.
SU1CiDE said:
If the LT28i can be unlocked, what if we flash the international firmware on our LT28at's and then do the LT28i method? Maybe a stupid question but this is the first phone I've had that's a challenge to do stuff like unlocking and rooting. My last phone (HTC Aria) was extremely easy.
Click to expand...
Click to collapse
Flashing firmwares does not change the ability to unlock the bootloader.
Spectre51 said:
Flashing firmwares does not change the ability to unlock the bootloader.
Click to expand...
Click to collapse
Kinda figured that
I tried to relock the bootloader. The flash pass but the phone can't turn on after that.
*I reflash the stock kernel again and the phone can power on now.
So here is the result, once you relock bootloader, you need to flash back the stock kernel in other to turn on the phone. Hopefully this will help those people who got stuck after relock bootloader.
Hello guys
I was just wondering, if bootloader unlock or flashing cutom kernel will allow to use sim cards from other mobile operators (European for ex.) ?
I have an ability to buy this device in us through my friend. but Im interested if I would be able to use it in Europe I was thinking of buying xperia p or s, but they dont have microsd card support.
Im not interested in using LTE networks. Just common 2g.
I planning to use it like a second android device as a multimedia player instead of my galaxy s wifi5.0. (because of good sound quality and other features).
Thanx a lot for responses
Assyle said:
Hello guys
I was just wondering, if bootloader unlock or flashing cutom kernel will allow to use sim cards from other mobile operators (European for ex.) ?
I have an ability to buy this device in us through my friend. but Im interested if I would be able to use it in Europe I was thinking of buying xperia p or s, but they dont have microsd card support.
Im not interested in using LTE networks. Just common 2g.
I planning to use it like a second android device as a multimedia player instead of my galaxy s wifi5.0. (because of good sound quality and other features).
Thanx a lot for responses
Click to expand...
Click to collapse
No. You can't unlock the bootloader of the lt28at and you can't sim unlock it either. Best bet is get an international version not one from the US.
Sent from my LT28at using Tapatalk 2
Spectre51 said:
No. You can't unlock the bootloader of the lt28at and you can't sim unlock it either. Best bet is get an international version not one from the US.
Sent from my LT28at using Tapatalk 2
Click to expand...
Click to collapse
ok. thanx
probably wait for Xperia acro S... probably will be sold in europe in nearest future.
Drivers aren't working for my device. The alternative drivers link isn't working. Can someone please upload the alternative drivers. Thank you.:good:
i'm sorry if it was mentioned, but i didn't find . is there a way to unlock the carrier already for lt28at ? i don't mind losing the lte.
apkraven said:
i'm sorry if it was mentioned, but i didn't find . is there a way to unlock the carrier already for lt28at ? i don't mind losing the lte.
Click to expand...
Click to collapse
I think you can switch the rom to international version but it will still be bootloader locked. Not sure about carrier
Sent from my Sony Xperia Ion
apkraven said:
i'm sorry if it was mentioned, but i didn't find . is there a way to unlock the carrier already for lt28at ? i don't mind losing the lte.
Click to expand...
Click to collapse
Read this thread: http://forum.xda-developers.com/showthread.php?t=1761578
Sent from my LT22i using Tapatalk 2
Hey guys could you please help me to solve my phone, when i flash LT18_4.1.A.0.562_Nordic.ftf on my phone and until now it keep restarting/rebooting on the sony page then black and then again, i can't even hard reset on it, can anyone give me a new ftf or anything that can replace that? All i can do now is flash and fastboot, i can't even go into safe mode
Try these http://uploaded.net/folder/8rfx7b is your bootloader unlocked?
Was the flash successful in Flashtool, unlocked bootloader?
Yes i was unlocked my bootloader from sonymobile.com/developer site and the flash was successfully loaded, but which link should i take, the Generic world / Generic DE / Nordic?
PS: i was first time rooting my phone >.<
i have a xperia pro....i finished unlocking bootloader rooting and installing x-parts......then suddenly i saw pacman rom 4.1 i was exited:fingers-crossed:.....so i schedule to go to recovery mode on reboot via x parts .....when i entered it i projected my rom and clicked install ....it stared but after a while it aborted ..so i clicked on a option reboot.....after it my phone remains with sony logo.....(not erission )because it was at offical ics......
so now i want to relock my bootloader so i can install and recover my phone like it was.........i have tried things but not worked.......please,u can help me with relock bootloader orany other method to repair my phone....when i connect it in sus it says modified software...and it stoped right there
please help me..........i felling very low:crying::crying:
I think you can keep your bootloader unlocked.
Just download an official ROM FTF file for your phone and flash it using Androxyde's FlashTool. It should debrick your phone. Then, you can repeat your experiments with custom ROMs.
Regards, Pavel
i have tried using it but no change..
patrol-cz said:
I think you can keep your bootloader unlocked.
Just download an official ROM FTF file for your phone and flash it using Androxyde's FlashTool. It should debrick your phone. Then, you can repeat your experiments with custom ROMs.
Regards, Pavel
Click to expand...
Click to collapse
i have also tried to relock bootloader but i failed .......so i just want to lock bootloader again so i can repair it by update service
or give me any other method to repair my phone ......on screen sony comes and stops for 3 -45 min
please help me if i succeed:crying::crying: by your help coffe or bear to u:good::good:
Hey I'm new here so sorry if I explain it weirdly and I mistakenly posted this in a different section before
So my xperia M which is now unrooted can't install the 15.4.A.1.9 update it just downloads and reboots and goes to the boot up screen and loads for 2-3 seconds and blacks out and and restarts and it says couldn't install update. How can I fix this?
Try flashing a .ftf file via flashtool
Press thanks if I helped!
This might me the answer
Hey there!
I think i understood your problem and i have a question to ask you. is your bootloader locked or did u unlocked ur bootloader anytime and didnt lock it back.?
if your bootloader is unlocked , u wont be able to install updates from official Sony Update Center.
I dono if this is the exact reason y ur are unable to do but this happened with my phone too.
I use Sony Xperia M Dual C2004 and i wasnt able to install updates, then i noticed that my bootloader was unlocked then i used Flashtool to lock it back, then i was able to install the updates
Or if u want to install .FTF of your phone manually do it via Flashtool coz its safe
and if you want to get .FTF of your phone directly from Sony use PC Companion as Sony Update Service [SUS] is stopped
Hope it helps :angel::fingers-crossed::good: