This is a separate, smaller computer on the head unit's motherboard that is dedicated to managing low-level hardware I/O (input/output). It doesn't run Android but directly controls functions like radio reception, audio switching, amplifier control, button presses, steering wheel commands, and CAN bus communications.
Which of those would you like next?
The RKPX3 (often just called "PX3") is a Rockchip-based processor commonly found in older vertical-screen car stereos running Android 4.4.4 (KitKat) or Android 7.1 (Nougat).
Summary
A: No, the MCU update is separate from the Android system. Your apps, settings, and personal data remain intact. The MCU update only affects the low-level hardware control firmware.
The Ultimate Guide to RKX3 (RK3588/RK3399) MCU Updates for Android Head Units
Some premium RKPX3 boards include a secondary wireless MCU (ESP8266) for OTA updates. Check your manual for an OTA_URL command.
Commands (typical):
Fixing screen glitches, app crashes, and power management issues. How to Prepare for an Update
# Save images (example) dd if=/dev/mmcblk0 of=backup_emmc.img bs=1M status=progress # Or per-partition dd if=/dev/mmcblk0p1 of=bootloader.bin bs=1M sha256sum bootloader.bin
This section outlines the general procedure for updating your RKPX3 MCU. The process is well-documented across various user forums.
This is a separate, smaller computer on the head unit's motherboard that is dedicated to managing low-level hardware I/O (input/output). It doesn't run Android but directly controls functions like radio reception, audio switching, amplifier control, button presses, steering wheel commands, and CAN bus communications.
Which of those would you like next?
The RKPX3 (often just called "PX3") is a Rockchip-based processor commonly found in older vertical-screen car stereos running Android 4.4.4 (KitKat) or Android 7.1 (Nougat).
Summary
A: No, the MCU update is separate from the Android system. Your apps, settings, and personal data remain intact. The MCU update only affects the low-level hardware control firmware.
The Ultimate Guide to RKX3 (RK3588/RK3399) MCU Updates for Android Head Units
Some premium RKPX3 boards include a secondary wireless MCU (ESP8266) for OTA updates. Check your manual for an OTA_URL command.
Commands (typical):
Fixing screen glitches, app crashes, and power management issues. How to Prepare for an Update
# Save images (example) dd if=/dev/mmcblk0 of=backup_emmc.img bs=1M status=progress # Or per-partition dd if=/dev/mmcblk0p1 of=bootloader.bin bs=1M sha256sum bootloader.bin
This section outlines the general procedure for updating your RKPX3 MCU. The process is well-documented across various user forums.