Here is a stock ROM, MTK Backup for Infinix X503 which is likewise known equally Infinix Surf Bravo.
With this Infinix X503 flash file, y'all tin flash stock ROM dorsum to your Infinix X503 using SP Flash Tool. This is generally required when y'all bring software issues alongside your Infinix android devices, as well as inward almost cases, flashing stock ROM on infinix android devices corrects all software errors if y'all know how to produce it.
Below hither is the download link for the stock ROM. You may likewise meet the tutorial page on how to flash stock ROM on infinix as well as other MTK android devices below.
Infinix X503, Surf Bravo Stock ROM Download Details:
Version: Android 4.2.2 (JellyBean)
ROM Size: 348mb
Phone Configuration: Infinix X503, Surf Bravo Spec as well as Configuration
ROM Download Link: Download Infinix X503 Surf Bravo ROM Here
How to Flash Stock ROM on Infinix as well as other MTK Android Here
Source: Hovatek