[Q] How to unlock & re-lock bootloader ? - Xperia Play Q&A, Help & Troubleshooting

i searched the xplay forum and general forum but i didn't quite find what i wanted. What i wannt to know is how to unloack and relock bootloader.
idk if am right but correct me if am wrong
i know sony does the unlock bootloader on their website. so i know how to get it unlocked
now if i unlock my bootloader, i know that it voids my warranty and something about certificates but if i unlock it and flash custom roms and kernels and stuff. if sony decides to bring out there ICS update at the end of march and i want the update i would have to relock bootloader and reflash a stock rom & and stock kernel (depending on what i flashed)
and if so does n e one know how to relock bootloader???

Related

[Q] Rooting and carrier warranty

I need your help guys,
just got my Xperia ARC and i wanted to root it by this guide and i have a few questions:
i bought the phone from an Israeli carrier (pelephone if its matter) so in the guide i need to change the carrier firmware to the original firmware and i wander if it will void the warranty. also is there any way to change back the firmware after the change, if so then how? i searched and i couldn't find anything...
thanks ahead
The thing with Rooting a phone, is that you can root your phone and still the ¨stock¨ Arc is untouched after you have unrooted.
The flashing and rooting dont break the warranty by it self.
If you change from locked bootloader to unlocked.. The warranty is removed.
Easiest way to root is:
*Download*
3.0.A.2.181 Generic World: http://www.mediafire.com/?​y9s73andrl4bllc
*Use Flashtool to Flash .181*
Flashtool: http://www.multiupload.com​/7H4JT35B6G
*Use Gingerbreak after you flashed back*
http://forum.xda-developers.com/show....php?t=1044765
*After it have rebooted and active, go to settings and do a OTA over wireless.
This way you keep your Arc locked, nothing good comes from unlocking the bootloader yet.
Nepturion said:
nothing good comes from unlocking the bootloader yet.
Click to expand...
Click to collapse
That's not entirely true. You've got custom ROMs being developed; over-clock kernel just released, Recovery and what not.
Unlocking the bootloader is personal choice. I may not unlock my bootloader just yet but I can't deny that with improvements being shown, it's an increasingly tempting option. LOL!

[Q] unlock sim and bootloader on xperia play

Hi.I'm going to buy an italian xperia play branded TIM.
My question is:Can I flash a general firmware to debrand the phone and than unlock the bootloader with fastboot?
Can someone explain me how to do these things?
Thanks very much
Think the 1st sticky thread at the top of this forum should answer all your questions!
well.
my last question.
If i buy a branded xperia,can I flash a general stock firmware non branded after i installerd Clockworkmod for locked bootloader?and next,unlock bootloader and flash doomkernel?
A better way to do that is just to not flash the CWM for locked bootloaders. The reason being that doomlords kernel includes CWM in it already, I'm not sure how the locked version is stored or whatever but you might run into problems if you have both "installed".
So there is a Doomlords kernel for locked bootloaders? mmm..this is a good news.In fact i wanted to flash CWM first because i thought that i have to unbrand my xperia and than flash another kernel.So i can buy xperia branded and install doomkernel? or i have to:
by xperia-install CWM-unbrand Tim-Unlock bootloader-remove CWM-install doomkernel? excuse me for noob
easiest way to debrand your phone: search Wotanserver on google and use their software to debrand (really esay, there's a step by step guide), then do whatever you want...
No, how it works is you have to unlock your bootloader in order to flash a kernel. As for unbranding you can either use the Wotan server or a .ftf file, neither of these require an unlocked bootloader. You can also flash CWM with a locked bootloader, however this is not the one included in doomkernel, and it will not grant you the ability to flash ROMs as you need an unlocked bootloader to flash the kernel. You want to touch the kernel? You need to unlock your bootloader. Unbranding? You can simply use the two methods listed above. All I was saying earlier is that if you plan on getting your bootloader unlocked (which in most cases is going to run you $24) theres no need to install the locked bootloader CWM first as once youre unlocked you can just flash doomkernel and already have CWM installed.
BuckM said:
No, how it works is you have to unlock your bootloader in order to flash a kernel. As for unbranding you can either use the Wotan server or a .ftf file, neither of these require an unlocked bootloader. You can also flash CWM with a locked bootloader, however this is not the one included in doomkernel, and it will not grant you the ability to flash ROMs as you need an unlocked bootloader to flash the kernel. You want to touch the kernel? You need to unlock your bootloader. Unbranding? You can simply use the two methods listed above. All I was saying earlier is that if you plan on getting your bootloader unlocked (which in most cases is going to run you $24) theres no need to install the locked bootloader CWM first as once youre unlocked you can just flash doomkernel and already have CWM installed.
Click to expand...
Click to collapse
ok thanks.i heard that the italian xperia and not the verizon ones can be unlocked with an official method released by sony
Yep thats true, it's the case with a lot of r800i's, if you can put your phone into fastboot mode (turn off, hold search button, plug into usb, blue light comes on) you can unlock it for free through sonys online tool. While the light will go on for the CDMA version you don't have an IMEI to enter on the site so it wont work. All other plays CAN be unlocked, but its not free, you need to go through a pay service to enable fastboot.
Very thanks!however one of my friends bought an xperia and it was GSM R800i TIM and he was able to debrand and unlock so i think that also i can unlock my future xperia,or almost i hope it
Ya it all depends on where you get it from, but keep in mind it only costs $24 to unlock, so even if you find one say on eBay thats cheap but locked to a carrier, you could still just pay $24. That being said they're going pretty cheap now so I don't think you'll have a problem finding one, unlocked or otherwise. As a side not though, you don't need to be unlocked to debrand the phone, you just flash a different firmware file .
and so i can flash a generic firmware with flashtool or similiar?without installing CWM for loocked bootloaders?that's simply excellent!It's can't be better Ok,i will buy an xperia play and not lg optimus dual,that i simply hate xD i don't want a super-power phone,with a bad designe and without the pad.i loved,i love and i will love pad in gaming
Yep you can flash firmware, install CWM, and root, all without unlocking the bootloader (not that you need one to do the others). Unfortunatly the more fun stuff does require an unlocked bootloader, ie overclocking, undervolting, custom ROMs, etc. Anyway you always have the option, so read up on it and decide if you need it or not, regardless, enjoy your new toy

[Q] Can't unlock bootloader

Everytime i try to unlock the bootloader it says the bootloader is already unlocked but its not
I looked everywhere but i cant find the solution so i came here in hope someone can help me.
If it says that it is unlocked then it actually is. All that you get from unlocking the bootloader is the ability to flash custom kernels. UB itself gives you nothing apart from the ability to flash custom kernels.
thanks for the reply but i was flashing the kernel wrong now its working

[Q] Can I root without unlock the bootloader or to locked it again?

Hello guys, sorry because may be this is the 50th time someone ask this question but the situation change every day. Yesterday I won from lottery and decide to go from G3 to G4. My model is European H815, I want to ask you can I root G4, change the recovery and e.t.c. without unlocking the bootloader? And also if I unlocked it is their any way to locked it again or to use my warranty? Thank you!!
well you can only root using low effort root(google it or find it here ) But to change recovery you have to unlock bootloader
No there is no way confirmed to relock your bootloader
GOOD LUCK
Thank you! If I root by this way and download Flashify and try to change recover what will happen ? Thank you!
without bootloader unlocked nothing will chnage ( recovery wont be installed ) and when you reboot your phone it will get u error (authentication error #9) as i remember and you will have to flash new firmware using lg flash tool 2014 so i dont recommend you do so
if u wanna change recovery unlock ur bootloader
you are welcome anytime
I did not get it, I hope you can light me up:
1. Doing root using low effort root means rooting without unlocking bootloader? (because I flew over the thread and did not read anything about it)
2. If I do unlock Marshmallow's bootloader, what happens when I downgrade to Lollipop via flashing proper KDZ? (I would guess that the unlocked bootlader will be overwritten!? So flashing Marshmallow again would end up in a locked bootloader, doesn't it?)
thanks
You can root lollipop without unlocking bootloader but with marshmalow you can't, you have to unlock the bootloader.
You need an unlocked bootloader for custom recovery.
Bootloader unlocking is a one way operation , you can't go back.

Install custom ROM or root with out unlock bootloader

Hi my Sony Xperia xa2 say bootloader unlock no is there anyway to force software or at least root with out unlock bootloader thanks
This is not possible. In order to flash anything to the device, the bootloader must be unlocked. The whole point of the bootloader lock is to prevent flashing anything; firmware is updated via OTA.

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