New Sony Xperia bootloaders will allow booting from recovery partition

by XB on 2nd May 2015

in Firmware, Tips & Tricks


2015-05-01-finally-boot-to-recovery-enabled-in-special-bootloaders-from-sonySony Mobile plans to make it much easier for developers to install custom ROMs. Sony will release new bootloaders for Xperia devices that will enable them to boot from the recovery partition, a key requirement to installing and booting custom ROMs.

This means that Sony Xperia users will now not have to worry whether a custom ROM even has a recovery as it will always be installed on your device. It also means users will be able to use normal recovery images used on any AOSP-based project.

The news comes from the FreeXperia team, who say that previously, developers had to work around the limitation of not being able to boot from recovery by bundling the boot and recovery ramdisk into a single boot image. This required modifications to the Android build system that could make it difficult to recover from a bad install. The new bootloaders mean that devs no longer need to modify the build system.

The first set of Sony Xperia devices to receive the new bootloaders are those based on Cortex-A7 and include the Xperia T2 Ultra, Xperia T3, Xperia M2, and Xperia E3. These are live right now and can be installed by using Sony’s own flash tool (not to be confused with Androxyde’s version of Flashtool). Once the device is recognised it will offer the “Open devices” bootloader. For more details hit the source link.

Emma Bootloader

Via FXP.

Thanks Josephnero!

  • Anas ßalóÒsh

    So we can install custom roms no root needed

  • Anas ßalóÒsh

    ???

  • If only bootloaders on carrier-branded devices were unlockable.

  • Yali AA

    ¨These are live right now and can be installed by using Sony’s own flash tool.¨
    From Sony’s site:
    ¨The flash tool for Xperia™ can only be used for Xperia™ smartphones with unlocked boot loaders.¨
    This is probably for those who have unlocked bootloader, so no point in cheering.

  • ????? ????????

    They are with a procedure or luck. I’ve read about cases where after service the phone was returned with bootloader unlockable allowed yes or where they emailed to the provider which emailed sony and gave you some unlock code that works for your phone.

  • Hassan Alghar

    You have to break the bootloader in order to flash this new boot image

  • Amimanot

    From the FXP blog:
    “As part of the Open Devices initiative (and after years of harassment from FXP), Sony Mobile is releasing a set of special bootloaders that enables booting from the recovery partition.” lol

  • Sadman Khan

    Flashtool can be used on locked bootloaders.

  • Shehab Skull

    i have unlocked my bootloader and installed cm12.1 on my yuga “, after I feel bored and missed sony style i downgraded to official kk again and restored my DRM keys in order to make bravia engine works again and then locked my bootloader B|

  • Svnjay

    The developer community for the Xperia T3 is dead :(

  • Ariya SD

    Can this be used on stock ROMs?

  • Yali AA

    Yes, it can. But this feature is for unlocked I presume.
    I did use the Sony Flash Tool, and it didn’t find my Z3 at all, and on the manual it said unlocked device required. So unlocking the device should be the last thing anyone does, even tho you can restore the DRM keys. I just want root, no need for bugs for DEV firmware.

  • Yali AA

    No.

  • Yali AA

    You need to unlock the bootloader to install custom ROMs.
    http://developer.sonymobile.com/unlockbootloader/unlock-yourboot-loader/

  • Ariya SD

    Really? Damn. That’s unfortunate.

  • jeson|

    love the xperia,.[ http://SmartMoneyLand.com

    IIIIIIIII__-_-__IIIIIIIIIII

  • Jecht_Sin

    My understanding is that you need the unlocked bootloader. Then you can flash it and the kernel gets replaced, also adding the recovery partition. The stock ROM won’t change unless you install a custom one Thus, yes.

  • Pingback: [feedly][Xperia Blog] New Sony Xperia bootloaders will allow booting from recovery partition | Dream Seed Annex()

  • Paul M

    Does this mean that it will be easier to switch between Sony’s branded Android firmware and Google Play Edition firmware?

  • Ariya SD

    I hope that’s the case. I currently don’t have issues with the stock ROM, but I’d love to have access to the recovery in an easier way.

  • Nikhil Sharma

    When will you release OTA update for Sony Xperia T2 Ultra Dual in India?

  • Richard

    I flashed the new bootloader using Emma while using stock rom. had no problems doing so.

  • Chris Burks

    Why the hell did I buy a z3v?”o you’ll have lollipop in February…. “fu Sony and Verizon

  • Luis Ramirez

    sim unlock not boot

  • ????? ????????

    Bootloader as well. Research a little.

  • Luis Ramirez

    good luck getting a carrier to unlock, even tho people tend to confuse the sim unlock to the boot

  • ????? ????????

    Yeap, I know, but I did ask around at T-Mobile in my country and for now, because I took the phone on contract, they won’t give me the code, but when the warranty of the phone expires (note, not the contract), they told me to write them again.

  • Luis Ramirez

    that is the current policy of tmobile in the united states but they only offer sim unlock, prob different where you live

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  • Haldi

    so, installing this new bootloader will break all older rom’s?

  • Gus

    I’ve unlocked my bootloader with kingroot and now how can i Relock the bootloader or install the new android 5.1.1 (maybe by computer) ????

  • Fábio Dos Anjos

    Not work…Flashtools not unlock…HELP ME!

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