- First backup all your important data.
- Download the required files below
- Copy the file AD681H-Kitkat.zip to ROM folder in sdcard.
- Extract the files Recovery.zip.
- Turn off the phone, go into recovery mode by pressing the Power + Vol-Up simultaneously and immediately released when the smartfren logo appears .
- On the Android menu system recovery, perform wipe data / factory reset and wipe cache partition (see Figure 1)
- Still on the Android system recovery menu, go to apply update from sdcard and then to go to the ROM folder (see figure 1)
- Select AD681H-Kitkat.zip (see figure 3), after which the process of upgrading to kitkat will run, wait until the process is finished
- Finished, restart hp