Download 4.4.2 Stock Firmware for Doogee Dagger DG550 smartphone from here, here or here. You can download 4.2.9 Stock Firmware for Doogee DG550 from here.
Archive name: DOOGEE_DAGGER_DG550_Android_4.4_20140815.zip
Archive file size: 490 MB
Support: Mediatek MT6592
Project: ratech92_cwet_rlk_kk
Config_version: V1.1.2
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