Develop Bugs

ROMs for Locked Bootloader

Hi XDA, I've got an Xperia Play that's rooted with a locked bootloader running ICS, I've used the method in this thread here: http://forum.xda-developers.com/showthread.php?t=1762372. So far all I've done is gotten it rooted and cwm installed. However, anytime I try to flash a different ROM over I get bootloop, hangs on the Sony logo. I've tried the installing the following ROMs:
http://forum.xda-developers.com/showthread.php?t=1877297
http://forum.xda-developers.com/showthread.php?t=1719746
If it makes any difference, I never attempted to install the ROM found here (http://forum.xda-developers.com/showthread.php?t=1790615) before trying any other ROMs, I just went straight into the ROMs listed above but no luck. So, my question is, what is the best MIUI or AOSP ROM for an Xperia Play with a locked bootloader, and how can I install it?

The roms you were trying to flash needs custom kernel which means you need to unlock bootloader, that's why you get bootloop. For AOSP and MIUI roms you need custom kernel which means you need to unlock bootloader. As for locked bootloader you can only use the locked bootloader ICS by vokal and Markphyton ICS.
Sent from my awesome Xperia Play with DoomKernel

jeff7424 said:
The roms you were trying to flash needs custom kernel which means you need to unlock bootloader, that's why you get bootloop. For AOSP and MIUI roms you need custom kernel which means you need to unlock bootloader. As for locked bootloader you can only use the locked bootloader ICS by vokal and Markphyton ICS.
Click to expand...
Click to collapse
I also found one MIUI ROM that said it could be installed on locked bootloader, don't remember where I found it but it said for locked bootloader put the nandroid backup in the recovery folder and install from there, which I did. It got past the Sony logo but then hung at a black screen. How can I unlock my bootloader? My phone status says my bootloader cannot be unlocked, though I figure there must be a way. Can anyone help me out please? Also, thanks for your reply.

www.unlock-bootloader.com
The only easy and safe way, $24.
Sent from my awesome Xperia Play with DoomKernel

I use to have that problem with stock based roms... Try do a full wipe and format system before you flash... The format system bit is important might just fix the boot loop it worked for me before when I installed markphytons rom...but when u format system you will lose cwm so your going to have to install it again

jeff7424 said:
*url*
The only easy and safe way, $24.
Click to expand...
Click to collapse
I tried to get a hold of the guy who does that, he replied to one of my emails but then never got back to me. Oh well! Thanks for your help
cippi21 said:
I use to have that problem with stock based roms... Try do a full wipe and format system before you flash... The format system bit is important might just fix the boot loop it worked for me before when I installed markphytons rom...but when u format system you will lose cwm so your going to have to install it again
Click to expand...
Click to collapse
I still have yet to try markphytons ROM since I've wanted to use others, but I guess I have no other option and it's probably better than the ROM that the ROM I'm currently running.
I was under the impression that any ROM based on stocked ICS would work with the above method, is this not true? Where can I find ROMs based on stock ICS 4.0.4? I've searched but haven't had much luck...

Yea that's what I thought aswell but never tried any other roms...i always revert back to gb... It doesn't really make a difference which stock base Rom you flash they all have the same camera and gamepad problem I think

running ics on xperia play with locked bootloader
Brohnson said:
Hi XDA, I've got an Xperia Play that's rooted with a locked bootloader running ICS, I've used the method in this thread here: http://forum.xda-developers.com/showthread.php?t=1762372. So far all I've done is gotten it rooted and cwm installed. However, anytime I try to flash a different ROM over I get bootloop, hangs on the Sony logo. I've tried the installing the following ROMs:
http://forum.xda-developers.com/showthread.php?t=1877297
http://forum.xda-developers.com/showthread.php?t=1719746
If it makes any difference, I never attempted to install the ROM found here (http://forum.xda-developers.com/showthread.php?t=1790615) before trying any other ROMs, I just went straight into the ROMs listed above but no luck. So, my question is, what is the best MIUI or AOSP ROM for an Xperia Play with a locked bootloader, and how can I install it?
Click to expand...
Click to collapse
hi may i ask how you are running ics on your xperia play with locked bootloader and btw you only flash certain types of custom roms with locked bootloader as i have flashed nxtbean on xperia play with locked bootloader.

Ibrahimm786 said:
hi may i ask how you are running ics on your xperia play with locked bootloader and btw you only flash certain types of custom roms with locked bootloader as i have flashed nxtbean on xperia play with locked bootloader.
Click to expand...
Click to collapse
You cant run ics on your xperia play because ICS requires a ICS kernal. You are currently using a GB kernel (locked bootloader) and ICS cant use a GB kernel.

Of course you can run ICS for locked bootloader it's created by vokal1992 but it runs very slow but you can try his/her kickass Gin2JellyBean ROM

BryanRG1996 said:
Of course you can run ICS for locked bootloader it's created by vokal1992 but it runs very slow but you can try his/her kickass Gin2JellyBean ROM
Click to expand...
Click to collapse
No you got it all wrong that rom is stock gb themed with ics. Theres nothing ics about it other than its skin.

Sony Xperia ION LT28at (rooted & Locked)

Hey guys, big time reader, not so much of a poster, since I read a TON. I will start with background...
Galaky S2 custom kernel Cyg/nightly rom/rooted
Galaky S2 Skyrocket rooted
Acer Iconia A500 32gb rooted/custom kernel/rom
Samsung Galaxy Tab 2 10 rooted
So I know my way around. My questions are all relted to my Xperia AT&T ION LT28at (already rooted)
after reading many MANY pages on unlocking the bootloader, I am lost.
I went to the official Sony site and input mu Mime code minus the last digit, and I got an unlock code via email.
Here is my problems, i do not have an off brand sim card and when I try to use other guides with the ericson flasher program, i follow the steps.
1. Power down phone
2. Hold down volume - button while plugging in usb to pc
3. Hold down the fastboot button while plugging in usb to pc....this is the problem....
step3 wont work. the sony code site says the fastboot button is volume +, other sites say its volume + AND Power. No matter what I try, its not working at all. once it connected for a split second and showed the window with the mime (sp?) number greyed out with nothing there and a row below for my unlock key, but the phone disconnected.
So here are my questions....
1. What is the exact procedure to enter fast boot mode on Sony Xperia Ion LT28at as soon as I am done with step 2? Buttons to press, power down etc.
2. I really just want Cynogen (sp) mod rom, do I absolutely NEED an unlocked boot loader for this?
3. I want to enable "Portable WiFi Hotspot" so I can surf with my tablet. Is an unlocked bootloader REQUIRED for this?
4. I am lov9ng that the cynogen mod allows me to add more rows of icons to the home screen, which is one of my main reason for wanting a new rom, I guess this is part of question 2. Is an unlocked bootloader required?
5. Can anyone link me to a nice tutorial for these two things? Installing roms/list of roms on a locked bootloader xperia ion lt28at? As well as one for if I get this thing unlocked.
6. Finally I could really use a good explaination, be it video or baby step by baby step to get this phone into fastboot.
And while I am here, instead of making 4 more threads in 4 areas....
Is there an official (or unofficial) version of Jellybean for....
Galaxy S2 i777
Galaxy S2 Skyrocket i797 (i think)
Acer Iconia a500 32gb
Samsung Galaxy Note 2 10.1?
thanks in advance and I am very sorry for the dumb questions, I guess we all get stumpped sometimes. Afterall I did root 2 other phones and tablets with new roms and kernels.
thank you!

You have a LT28at.....you can not enter fastboot as the LT28at does not allow unlocked bootloader. You don't need another brand sim that is only for sim unlocking not bootloader unlocking.
to answer your questions:
1. you can't since it does not allow unlocked bootloader
2. yes cyanogen requires a custom kernel which you can only flash if you have an unlocked bootloader.
3. Flash the LT28i generic firmware and you can use tethering/wifi hotspot without issue. (just manually put in your apns)
4. See #2 or use a different launcher such as ADW or one of the many others.
5. Just look for the locked bootloader supported rom you want - instructions for installing it "should" be in its first post
6. See #1

Spectre51 said:
You have a LT28at.....you can not enter fastboot as the LT28at does not allow unlocked bootloader. You don't need another brand sim that is only for sim unlocking not bootloader unlocking.
to answer your questions:
1. you can't since it does not allow unlocked bootloader
2. yes cyanogen requires a custom kernel which you can only flash if you have an unlocked bootloader.
3. Flash the LT28i generic firmware and you can use tethering/wifi hotspot without issue. (just manually put in your apns)
4. See #2 or use a different launcher such as ADW or one of the many others.
5. Just look for the locked bootloader supported rom you want - instructions for installing it "should" be in its first post
6. See #1
Click to expand...
Click to collapse
In your opinion, do you think that this bootloader would get unlocked? I wanna know before I buy. the same was said about the x10 by Sony but it was unlocked soon after.

brenty108 said:
In your opinion, do you think that this bootloader would get unlocked? I wanna know before I buy. the same was said about the x10 by Sony but it was unlocked soon after.
Click to expand...
Click to collapse
No idea.
Sent from my Sony Xperia™ TL

This help me out also , my bootloader is also lock and cant be unlock , so i hope some day it will be able to get jelly bean .

stupid question
Spectre51 said:
You have a LT28at.....you can not enter fastboot as the LT28at does not allow unlocked bootloader. You don't need another brand sim that is only for sim unlocking not bootloader unlocking.
to answer your questions:
1. you can't since it does not allow unlocked bootloader
2. yes cyanogen requires a custom kernel which you can only flash if you have an unlocked bootloader.
3. Flash the LT28i generic firmware and you can use tethering/wifi hotspot without issue. (just manually put in your apns)
4. See #2 or use a different launcher such as ADW or one of the many others.
5. Just look for the locked bootloader supported rom you want - instructions for installing it "should" be in its first post
6. See #1
Click to expand...
Click to collapse
______________________________________________________________________________________________________________
how do you flash the LT28i firmware onto the LT28at? I have been looking for a post or thread with the instructions, but so far I have been unable to find anything... please help. I am rooted and was able to install a recovery program on my ion but I have yet to use it and I want to know if I can flash the generic LT28i firmware from there...

luwaldo said:
______________________________________________________________________________________________________________
how do you flash the LT28i firmware onto the LT28at? I have been looking for a post or thread with the instructions, but so far I have been unable to find anything... please help. I am rooted and was able to install a recovery program on my ion but I have yet to use it and I want to know if I can flash the generic LT28i firmware from there...
Click to expand...
Click to collapse
Look at the stock firmware downloads thread. It has a guide for using flashtool which is what you use to flash the firmware. Or since you installed a recovery (cwm I presume) you can use one of the prerooted stock firmware. That thread is in the dev section.
Sent from my Sony Xperia™ Z

Spectre51 said:
Look at the stock firmware downloads thread. It has a guide for using flashtool which is what you use to flash the firmware. Or since you installed a recovery (cwm I presume) you can use one of the prerooted stock firmware. That thread is in the dev section.
Sent from my Sony Xperia™ Z
Click to expand...
Click to collapse
after i flash that would i be able to unlock bootloader, or does that depend on something else? i would like to install the PA rom that ganeshbiyer posted in an other post.

luwaldo said:
after i flash that would i be able to unlock bootloader, or does that depend on something else? i would like to install the PA rom that ganeshbiyer posted in an other post.
Click to expand...
Click to collapse
You can't unlock the bootloader of the LT28at at all.
Sent from my Sony Xperia™ Z

Yea sucks about the boot loader deal. I am thinking about selling mine and find a Red H model of the Ion. PA on a Ion would be great and may still be kind of possible. I was recently running The Nexus rom for locked boot which was very smooth. In that thread it talks about per app dpi being possible with the xtheme that is installed. I have not tried it so cant say how well it would work. Xtheme also allows cm themes to be ported as well. Sure it would not be PA but it seems you could close with a bit of work.

Spectre51 said:
Look at the stock firmware downloads thread. It has a guide for using flashtool which is what you use to flash the firmware. Or since you installed a recovery (cwm I presume) you can use one of the prerooted stock firmware. That thread is in the dev section.
Sent from my Sony Xperia™ Z
Click to expand...
Click to collapse
hello there sorry to bother you with this question can we flash a diferent series rom like lt28h lt28i on our lt28 at? locked bootloader since we never get jb i want o update but this treats make me dizzi theres no info at all how to flash on lt28at locked bootloader been looking for a tutorial how to flash but no luck do we have to flash a kernel after flashing different roms or do somenthing else can you help me explainig how to flash please?

nabelar82 said:
hello there sorry to bother you with this question can we flash a diferent series rom like lt28h lt28i on our lt28 at? locked bootloader since we never get jb i want o update but this treats make me dizzi theres no info at all how to flash on lt28at locked bootloader been looking for a tutorial how to flash but no luck do we have to flash a kernel after flashing different roms or do somenthing else can you help me explainig how to flash please?
Click to expand...
Click to collapse
You use flash tool to flash any of the stock firmwares. Or you can root and I stall a recovery to flash a tom based off stock kernel.
Sent from my Xperia Z2

Spectre51 said:
You use flash tool to flash any of the stock firmwares. Or you can root and I stall a recovery to flash a tom based off stock kernel.
Sent from my Xperia Z2
Click to expand...
Click to collapse
hey thank you for reply fast now I know what to do any rom that you can recommend me?

Sorry been out of the ion ROM loop for a while so I don't know what to suggest. I used stock anyway when I had the ion.
Sent from my Xperia Z2

LT28at
I am aware of that LT28at's boot loader cannot be unlocked
still from reading some threads i came to know that still i can install miui3
also i can also update it to jelly bean mine on is ics - pardon me if my information is wrong
except this 2 is there any possibility with locked boot loader ?
after such long time is there any discovery of unlocking bootloader or other methods to flash rom ?
thank you

[Q] XTXperience 9 problem. don't bite my head off guys.

I am pretty new to flashing ROMS and rooting. I rooted my S2 back in 2011. but since then I haven't. So i though I would do it with the Xperia S.
I installed XTXperience 9, unlocked bootloader. rooted n fastboot. I downloaded cwm recovery. cleared everything. installed the ROM, and It has got stuck in boot loop.
I was on the 6.1.A.2.45 firmware if that helps?
could someone please give me some short instructions and tell me what I am doing wrong I need this ROM looks so cool!
Please don't bite my head off either. I need help. it's only way i'll learn

Please someone

If you have unlocked bootloader, why don't you install a custom kernel? Like Advanced ICS Kernel, ELiTE, etc.

Nek0x90 said:
If you have unlocked bootloader, why don't you install a custom kernel? Like Advanced ICS Kernel, ELiTE, etc.
Click to expand...
Click to collapse
Not sure how to do that yet. would that possibly fix the boot loop I am having??

I've never installed a recovery manually, because I've always flashed a custom kernel with a recovery included, maybe that's why you're having a boot loop but I'm not sure.
If you already unlocked the bootloader you should flash a stock based kernel and that's it.

Nek0x90 said:
I've never installed a recovery manually, because I've always flashed a custom kernel with a recovery included, maybe that's why you're having a boot loop but I'm not sure.
If you already unlocked the bootloader you should flash a stock based kernel and that's it.
Click to expand...
Click to collapse
Okay well I have stock kernal I only tried flashing the ROM. how do I get out of this boot loop?

Flash a stock firmware with Flashtool.

Nek0x90 said:
Flash a stock firmware with Flashtool.
Click to expand...
Click to collapse
That did it. back on stock now. should I try flashing the custom ROM again?

Yes, and you can also try flashing a custom kernel.
Just follow this tutorial: http://forum.xda-developers.com/showthread.php?t=1527159

Nek0x90 said:
Yes, and you can also try flashing a custom kernel.
Just follow this tutorial: http://forum.xda-developers.com/showthread.php?t=1527159
Click to expand...
Click to collapse
I unlocked the bootloader before it got in the bootloop. after flashing firmware I guess it is still unlocked. just need to root it again

If you already have you bootloader unlocked just flash a custom kernel! If you flash a ROM after that, it will be pre-rooted.

Nek0x90 said:
If you already have you bootloader unlocked just flash a custom kernel! If you flash a ROM after that, it will be pre-rooted.
Click to expand...
Click to collapse
any short instructions or link where I can learn how to install a custom kernel?

hey click my signature "Read ME"

technostein said:
any short instructions or link where I can learn how to install a custom kernel?
Click to expand...
Click to collapse
Just download zip & flash in your phone's recovery. Clear cache & dalvik cache before that
Press Thanks
Sent from my Xperia S using xda premium

technostein said:
I am pretty new to flashing ROMS and rooting. I rooted my S2 back in 2011. but since then I haven't. So i though I would do it with the Xperia S.
I installed XTXperience 9, unlocked bootloader. rooted n fastboot. I downloaded cwm recovery. cleared everything. installed the ROM, and It has got stuck in boot loop.
I was on the 6.1.A.2.45 firmware if that helps?
could someone please give me some short instructions and tell me what I am doing wrong I need this ROM looks so cool!
Please don't bite my head off either. I need help. it's only way i'll learn
Click to expand...
Click to collapse
I tried with .45. .55 .50 Gb firmwares . Only .50 firmware gave me success like mentioned in the tutorial. :good:
Hit thanks if i helped

Error with flash

Hi all, I have a serious problem, I was following a tutorial to install CM on my ZL. The tutorial was for the Z and ZL, when I get to the part of installing the recovery, download the link and not the Z ZL and install and reboot, the phone did not return to light. Anyone know how I could fix the problem. From already thank you very much, I hope you can help me. And forgive me for my poor English.

amnesia1000 said:
Hi all, I have a serious problem, I was following a tutorial to install CM on my ZL. The tutorial was for the Z and ZL, when I get to the part of installing the recovery, download the link and not the Z ZL and install and reboot, the phone did not return to light. Anyone know how I could fix the problem. From already thank you very much, I hope you can help me. And forgive me for my poor English.
Click to expand...
Click to collapse
You need a unlocked bootloader to do custom roms however there are custom roms for locked bootloaders too.

Sorry, but I do not understand what I said apparently what happened is that the Xperia download a recovery and install Z, instead of one of the Xperia ZL. After restarting the phone, the phone did not return to start. Sorry for my English but is very poor.
Anyone know what I should do?
LiLTrippz said:
You need a unlocked bootloader to do custom roms however there are custom roms for locked bootloaders too.
Click to expand...
Click to collapse
The problem is not that I can not install because of the bootloader, but that installing the recovery that was not the cell does not start, it is not detected by the FlashBot or the PC.

For AOSP roms like CyanogenMod you need an unlocked bootloader.
Locked bootloader works only for stock kernel based roms.
If your phone is already rooted and BL unlocked, download CyanogenMod http://download.cyanogenmod.org/?device=odin
Extract the boot.img from that .zip-file and flash it via fastboot.
You'll need fastboot drivers installed to work! (--> http://www37.zippyshare.com/v/40599174/file.html)

CokeJunkee said:
For AOSP roms like CyanogenMod you need an unlocked bootloader.
Locked bootloader works only for stock kernel based roms.
If your phone is already rooted and BL unlocked, download CyanogenMod http://download.cyanogenmod.org/?device=odin
Extract the boot.img from that .zip-file and flash it via fastboot.
You'll need fastboot drivers installed to work! (--> http://www37.zippyshare.com/v/40599174/file.html)
Click to expand...
Click to collapse
Hahaha I still make myself understood, installing a boot.img of "Xperia Z", the phone will not start, is not unbootable android, but the phone does not start. I can not even get into Fastboot mode

[Q] Xperia S Unable to Install any Custom Rom

Hey Guys,
New of the forum here. For the past few days, I have been trying to install a custom rom on my Xperia S which I bought in Hong Kong about 2 years ago. I also had it updated to JB .96 version.
I read the forums as much as I could and firstly tried to root the phone. I couldn't determine if I had a locked or unlocked bootloader. I used this rooting guide:
http://forum.xda-developers.com/showthread.php?t=2417672
by doomlord
and then I moved on to installing a recovery which was also following doomlords guide :
http://forum.xda-developers.com/showthread.php?t=2308493&highlight=adb+server
After having done this, I wanted to install PureSlim KitKat on my Xperia S which I found here:
http://forum.xda-developers.com/showthread.php?t=2606528&highlight=flash
But once I got into the recovery of CWM and selected to install the zip file, after installation it says that it will reboot device but it doesn't. I tried to manually start the phone but it couldn't start up. I can only get it to go into flashmode and thus I ended up flashing a ftf which I found here:
http://forum.xda-developers.com/showthread.php?t=2422053
Afterwards, I am back to square one and I repeated the steps to reroot the device and then I installed recovery again and then tried another rom, this time I tried LeopardRom which also resulted in the same problem of not booting.
I also use Galaxy S2 and have custom rom on that but I didn't expect it to be that much different for xperia S. I am willing to follow steps to resolve the issue here.
-Jazi

you cant install that rom because is for unlocked bootloader and you have locked bootloader, you need unlock the bootloader and install a kitkat kernel. When you finish this you can install this rom
Not all of the bootloaders can be unlock. My bootloader can't be unlock so I use a rom that doesn't need unlocked bootloader. The rom is existenz v1.35
Sent from my LT26i using XDA Premium 4 mobile app

10962 3523294
optic-XPERIA said:
you cant install that rom because is for unlocked bootloader and you have locked bootloader, you need unlock the bootloader and install a kitkat kernel. When you finish this you can install this rom
Not all of the bootloaders can be unlock. My bootloader can't be unlock so I use a rom that doesn't need unlocked bootloader. The rom is existenz v1.35
Sent from my LT26i using XDA Premium 4 mobile app
Click to expand...
Click to collapse
i have the same problem, i have locked bootloader and i want flash kitkat, can you give me some advise or a link on how to do it? i`ve just bricked my phone twice...