• Title: FROG S521HD
  • Listed: 03/06/2015 3:55 pm
  • ROM Version:ROM Android 4.4.2
  • You must be logged for ROM download.

Overall Rating : 2

1367 total views, 1 today


Author adMember Info


  • Listed by: SoCr@Te
  • Member Since: 05/15/0470


ROM Mobile FROG S521HD –ROM Android 4.4.2


Update OfficialROM FROG S521HD Version: S521HD 20150304-103757 –mt92_s15_s521hd_frog_cc_kk_wcdma_mul –KOT49H


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


Update Official ROM FROG S521HD Version: S521HD 20150126-162059 –mt92_s15_s521hd_frog_cc_kk_wcdma_mul –KOT49H


Official ROM FROG S521HD Version: S521HD 20150120-075725 –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.


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

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