DESCRIPTION

ROM Mobile FROG S521HD – ROM Android 4.4.2

ONLY MT6592

Update Official ROM FROG S521HD Version: S521HD 20150304-103757 – mt92_s15_s521hd_frog_cc_kk_wcdma_mul – KOT49H

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Official ROM FROG S521HD Version: S521HD-20150209-162205 – mt92_s15_s521hd_frog_cc_kk_wcdma_mul – KOT49H

Gapps include – No Rooted

Language support: Multilang

Install ROM :

- Unpack FlashTools, and Click on Flash_tool.exe
- Select a the MT6592_Android_scatter.txt in ROM
- Wait file to be added into Flash Tool
- choose Option->USB Model,click USB Model
   –> Choose Option->DA DownLoad All->Speed->High Speed, click High Speed
- Turn off your phone, remove the battery and replace it after some seconds (and don't turn on the phone).

- "Press F9 (hit Download button)" OR " if upgrade ROM Firmware->Upgrade "
- and connect your phone into the computer via USB data cable.
- The process will start and a red progress bar will appear after color purple, yellow.
- And green circles display
- Finish !

- You can now safely disconnect your phone and turn it on.

※Please make a backup of your device before installing or updating ROM