The safest place to find tested firmware is the Android Autoforum sections on XDA Developers. Look for threads dedicated to "MTCD/MTCE PX3" units.
The RKPX3 is a 32-bit ARM Cortex-A9 quad-core processor paired with a Mali-400 MP GPU. Most units originally shipped with or Android 7.1.2 Nougat . Because many manufacturers spoofed system details in the settings menu (e.g., claiming to run Android 6.0 or higher while actually running 4.4.4), verifying the base version is critical before flashing firmware. Firmware vs. MCU Updates
Missing firmware blob for the Realtek RTL8723BS or Broadcom chip. Fix: Download the “Rkpx3 WiFi fix.zip” from the same thread as your image. Flash via RKDevTool’s “Parameter” section or manually push files via ADB: Rkpx3 Android Update
This method is the easiest and safest for most users.
If your Rkpx3 unit is running Android 7.1.1, you can almost certainly find updated firmware releases or custom ROMs that will improve stability, fix bugs, and add features while staying on Android 7.1.1. The same holds true for Android 6.0.1 and 5.1.1 devices, though the selection of available updates gets smaller the older your Android version gets. The safest place to find tested firmware is
(maximum 32GB recommended) and a computer to download the firmware. The Update Process Prepare the Drive : Copy the specific update file ( update.img root directory of your formatted USB drive. Do not put it inside a folder.
This changes the core OS, updates internal system frameworks, and changes the user interface. Most units originally shipped with or Android 7
Both of these custom ROMs offer substantially better performance, more customization options, and fewer bugs than the factory firmware that shipped with most unbranded units. Users have reported smoother interfaces, faster boot times, and improved app compatibility after flashing these ROMs.
The easiest method is the update. Here’s how:
the unit. Most units will automatically detect the update.zip file and prompt you to install.