Jelly Bean available for custom ROM developers [alpha ROM]
Sony Mobile has announced that it has released the Android 4.1.2 Jelly Bean alpha ROM for the Xperia T (LT30p), continuing its tradition of releasing alpha & beta ROMs for upcoming firmware updates. As with any pre-release firmware, this Jelly Bean ROM is only meant for those who want to see what one can expect with the latest update. In saying that, Sony confirmed that the alpha ROM does not contain the final planned Jelly Bean UI.
Since this is not the final software upgrade roll out, there are a few requirements to pay close attention to before you flash the ROM:
- You should be an advanced developer with extensive knowledge in how to flash and switch between different ROMs. If you are a consumer without these developer skills, then we strongly recommend you not do try this as you may damage your phone.
- You must be using an unlocked Xperia™ T. It will not work on a locked Xperia™ T.
- You must unlock your phone using Sony’s Unlock boot loader service, and agree to all the legal and warranty conditions that apply. Please note that you may void the warranty of your phone and/or any warranty from your operator if you unlock the boot loader of your phone. Sony can then no longer guarantee the full functionality of your phone, and will not be responsible for any unusable functions or loss of personal data associated to the alpha ROM being flashed to the phone.
- Also, if you unlock the boot loader, you will not be able to get the final Jelly Bean upgrade from Sony. For additional information about limitations and warranty restrictions, please see Sony’s Unlock boot loader service.
- You should have read through and acknowledged the limitations of the software described below.
Only a limited number of features and functionalities are working and turned on in this alpha ROM. The reason for some features being disabled is because we have not yet passed all approvals yet. To get more information on how this work is carried out, check out our previous article about the bring up phase.
- Google Mobile Services (GMS) apps are not included (for example, Gmail and Google Maps).
- Modem is turned off and therefore the SIM card will not be recognised (this also means you can’t make any phone calls).
- Bluetooth™ is turned off.
- Wi-Fi® is turned off.
- FM-radio is turned off.
- NFC is turned off.
- UI look and feel is not updated to final Sony Jelly Bean software.
To flash the alpha ROM on your unlocked Xperia™ T, use our flash tool for unlocked Xperia devices. Check out the flash tool page for more information on how to download, install and use this tool.
One of our ambitions with this release is to get feedback from the talented developers in the open community. So if you flash this Jelly Bean alpha ROM and download the open source archive, please go to this XDA-thread and provide us with feedback once you have tried the software. It’s very much appreciated – we will use the feedback for future product and software strategies, both short term and long term. Your voice counts!