It's work in locked/unlocked bootloader too!
- ES Vodafone source - thanks for the idea to sur1k
- Vodafone's apps and customization removed, but any other apps and bloatware not - stock ROM, not cooked.
- Rooted, SuperSU app installed
0.) Copy the downloaded update_XMP587-ExPeacer.zip to your SD card
1.) Install CWM to your ROM
2.) Restart, and enter CWM
3.) If your bootloader LOCKED: mount&storage -> format /system.
4.) Back -> advanced -> Wipe Dalvik Cache.
5.) Back -> install zip from sdcard. Choose the update zip, then follow the instructions.
6.) When it finished, turn off the device.
7.) Copy the downloaded SK17i_4.1.B.0.587_Kernel-Baseband.zip to the Flashtool/firmwares folder.
8.) Start the Flashtool, go to Flashmode. Choose the SK17i 4.1.B.0.587 Kernel-Baseband line, then install it.
9.) If finished, start the device.
+1.) After the first boot, reboot the device again!
If you update from GB, at the 3rd step, choose format /data too!!
If you update from .431, in this way, you can keep your apps and settings!