Finally, the wait is over; Sony Xperia Z Ultra can be upgraded with Marshmallow. You can now get rid of your old Android version and get updated with the Marshmallow.
Sony Xperia Ultra Z Marshmallow Update – Custom ROM
Important to note
• Make sure that the device is charged at least 60%
• And don’t try this, on any other device.
• Download one of the above mentioned ROM.
How to Install Custom ROM Sony Xperia Ultra Z
Step 0. Without a Custom Recovery like TWRP or CWM, you can’t proceed ahead, make sure you have installed in your device.
Step 1. Download the custom ROM and Gapps file on your PC. ROM Download Link will find in the Custom ROM section for your device.
Step 2. After downloading, transfer both the files to your device’s SD card and remember the path.
Step 3. To flash the downloaded ROMs, you need to boot your device into bootloader mode. If you are rooted, you can use Quick Boot app from play store.
You will enter recovery mode soon, and should see TWRP or CWM recovery. If you see 3e recovery, See the link above step 1.
Step 4. [Optional] Once in TWRP/CWM, create a backup of your device. Use the backup option for this in recovery. You can skip this if you have already created.
Step 5. Do a Factory Reset. (This step will delete all your data)
In TWRP, tap on Wipe then advanced wipe, and now make sure you have selected these partitions: Dalvik cache, data, system, and cache.
In CWM, choose wipe data factory reset option. Confirm on next screen.
Step 6. Now, install the ROM file.
In TWRP, on the home screen, tap on Install, and then locate the ROM file and tap on it. Then do the Swipe action at the bottom to begin flashing the update.
In CWM, choose ‘install zip ..’ option, select file and confirm by selecting Yes on next screen.
Step 7. Now, install the Gapps the same way you installed Custom ROM on your device in the previous step. Go back to recovery’s home screen to get to install option.
Step 8. Once done, restart the device from the option out there.
It’s done now, you are good to go. Don’t forget to download and install Marshmallow Gapp, because in the ROMs by default apps like Google Play Store, Maps and few more might be missing.