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[HOW-TO] Root stock ZVJ by downgrading to ZVH.
Disclaimer: I am not responsible if something goes horribly wrong as a result of you reading this tutorial.
This is my first tutorial; hopefully I've done everything right.
So why would anyone want to root ZVJ by downgrading to ZVH instead of ZVD?
Well, I personally have never downgraded to ZVD as I never upgraded to ZVH, but I do recall that one of the prerequisites for downgrading was to perform a data wipe/factory reset, and that issues would often occur if such a reset was not performed.
Now recently I needed to root my sister's phone so that she could have more internal storage & install Beta Swype, but she had stock ZVJ and I didn't want to wipe her data by downgrading to ZVD.
So instead, I downgraded to ZVH, and then used sfhub's automated rooting tool to root ZVH & ZVJ all without wiping data.
Basically, by downgrading to ZVH instead of ZVD, you don't have to wipe your data when rooting ZVJ!*
This is assuming that you have stock ZVJ w/ ZVJ recovery; if you have anything else, you're looking at the wrong tutorial
- Download stock ZVH (alternate link, be sure to rename "LS670ZVH" as "update"), and copy it onto the root directory of the SD card (i.e. on the card but not in any folders or anything).
- Reboot into Recovery (turn off phone, hold down the HOME & VOLUME_UP keys, and hold down the POWER key until the Recovery menu appears) and use the volume keys & the menu key to install update.zip.
- Wait about 5-10 minutes for the update to install and for the phone to reboot itself.
- Use sfhub's automated rooting tool to root ZVH, and then root ZVJ. Download, install, run Option A, follow the instructions, run Option B, and follow the instructions. More details in the thread. Alternate download link here (thanks vector84an!).
If when installing the update.zip the Recovery tells you there is no update.zip, make sure that the file isn't in any folders and that it's actually called "update.zip".
If installing the update.zip outright fails, then redownload it and try again.
*If any glitches (i.e. force closes) arise as a result of the downgrade to ZVH, ignore them for now; they should theoretically be gone after reupgrading to ZVJ.
If you still have glitches after rooting ZVJ, then you should ignore them; after all, you're already rooted and can back up everything and install custom roms and stuff.
If for whatever reason these glitches cannot be ignored, then you might be one of the unlucky few who has to wipe data in order to properly root ZVJ. Sorry.
Much thanks to sfhub for the links to the ZVH update.zips and his awesome rooting tool.