In the past week, two prominentdevices gained dual boot functionality. Aside from giving you the option of playing around with separate, otherwise incompatible builds, dual boot is just plain “cool.” Now, this functionality has been added to the Sony Xperia ZL with ROMSwitcher.
Developed by XDA Recognized Contributor mithun46 (and a host of others cited in the thread), ROMSwitcher allows you to switch between Timescape and any AOSP-based ROM at will.
There are a few caveats with the installation. For starters, the primary ROM must be stock Timescape with any kernel. The secondary ROM can be any AOSP-based ROM, but it must use mithun46′s modified CyanogenMod 10.1 kernel. The secondary ROM ends up being installed in /cache, and /data and /cache are then stored in /data/dual. Finally, ROMSwitcher is still in its alpha stage. That said, it should be stable enough for daily driver status, so long as you’re careful during the initial setup.
As with any major modification, make sure you read the instructions thoroughly before getting started. Once you’re ready to take the plunge and expand your ROM horizons, head over to the development thread.