Look for MX9_4K_7.1.2_* + your Wi-Fi chip (e.g., RTL8189FTV, SSV6051).
To safely find the working firmware, you must look at the sticker on the bottom of your device or check the internal "Build Number." firmware tv box mx9 4k android 712 verified
Step A: Check the Build Number
Step B: Check the Chip Version (Advanced) If your box turns on, you can install the "Aida64" app from the Google Play Store to see the exact motherboard model (e.g., PCB board: M201D or MXQ-V3). Look for MX9_4K_7
Most MX9 resellers do not host official firmware. However, check mx9tvbox[dot]com (if active) or contact your original seller for a Google Drive link. To safely find the working firmware, you must
Do NOT skip this step. Open your MX9 unit (or look at the bottom sticker) and check for:
Pro Tip: Connect the powered-off MX9 to your PC via USB A-to-A cable. If it’s recognized as "WorldCup Device" or "Amlogic USB Burning Tool," you have an Amlogic-based box – which is essential for Android 7.1.2.