Here is a guide on how to flash any custom ROM to your Xperia Play with a unlocked bootloader.
Pre-Requisites
- Download Any Custom Rom For Your Device From XDA.
- Download Any Custom Kernel For Your Device.
- Have a device with a unlocked bootloader.
- Download this fastboot package.
We will refer to the downloaded custom kernel as CKernel and the Custom Rom as CRom.
Flashing the custom kernel and preparing the ROM
- Copy the CKernel.zip file to your sd card
- Extract the Fastboot package to a folder and copy the CKernel.img file to the same location.
- Shift + Right Click the folder and press "Open Command Window Here".
- Reboot your phone in to fastboot (Press search and connect USB cable , may be different for some 2011 devices).
- Blue LED should be switched on. This means your in fastboot. Now you need to type.
fastboot flash boot FXP126.img
- After a few seconds it should be done and say "Completed" or something similiar.
Installing the ROM
- Reboot your phone in to recovery (Keep Tapping Vol Down or Back or Another key when device is booting).
- Format the phone "Factory Reset".
- Next press "Install Any Zip From SD Card".
- Select the CRom.zip file that we copied over earlier and press yes/accept/apply.
- After a few minutes it should be done and say "Installed or Applied or Success".
- Now reboot your phone and wait patiently.
- If everything is done correctly then you should now be running your CRom e.g. AOKP, CM, MIUI, Etc.
Installing Google Apps (may not be needed depending on the ROM)
- Download the latest google apps that corresponds with your android version from goo.im/gapps.
- Copy the download zip to your SD Card.
- Reboot your phone in to recovery (Press the button you pressed earlier while phone is at the logo again).
- Next press "Install Any Zip From SD Card".
- Select the GoogleApps*.zip or GApps.*.zip file and press yes.
- After a few minutes it should be done and say "Installed or Applied or Success".
- Now reboot your phone and wait patiently.
You now should be running your custom kernel, custom rom and have the latest gapps installed.