If you’ve ever tried to get multiboot functionality to work on your Android device, you’ve probably heard of kexec. This is a method of live booting different kernels without having to flash them or using fastboot. Kexec has been used as the basis for bringing multiboot functionality to various devices such as the HTC Droid DNA and Sony Xperia M. And in fact, as of right now, it’s pretty much the only viable way of getting such feature working on your Android device.
With this said, we see another device taking the kexec route in order to boot multiple ROMs, this time being the Sony Xperia TX. This is made possible by XDA Senior Member updating, who has written a tutorial going through the necessary steps in order to get multiboot working. Due to the rather complicated procedure, each step has been explained in great detail, with plenty of examples of code to help you along the way. Credit must also be given to XDA Recognized Developer Tasssadar for porting the kexec-hardboot patch to MSM chips, and Senior Member alvinhochun, the creator of the aforementioned multiROM port for the Xperia M.
Updating does warn that this procedure is quite risky and advanced, so be warned when you do decide to give this a go on your Xperia TX. However, if you feel like you’re up a challenge, make sure to head over to the Xperia TX multi-boot guide to get started._________
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