1. Important Notice
PEMP BMW Linux head‑units feature two independent firmware releases: the Standard Version and the ZLT Version.
Do NOT perform cross-version firmware upgrades.
Firmware from different versions cannot be inter-flashed. Cross-version upgrading
Please be sure to confirm your current system version before downloading the matching firmware for upgrade.
Video Demo
You may watch our demo video on YouTube to learn how to distinguish the versions: https://youtu.be/81xILCSfFDI
2. How to Identify the System Version
Navigate through the unit menu: SETUP→ System → System Version
Standard Version: Version number starts with a date stamp
ZLT Version: Version number starts with the prefix ZLT
3. Additional Features of the ZLT Version
1.Use Car's BT Phone Channel
When this function is enabled, the head‑unit will utilize the vehicle’s factory‑original Bluetooth phone channel.
2. Web-based VI‑link
Supports web-side VI‑link screen casting function.
3. OEM System Screen Centered Display
When this feature is enabled, the OEM original vehicle interface will be displayed in centered mode. This centered display also works for the reversing camera view. The Standard Version stretches the image to fill the full screen.
4. Reversing Trajectory Line Adjustment
The interface for aftermarket reversing cameras supports custom adjustment of parking-guide trajectory lines.
4. Risks Caused by Wrong Firmware Flashing
Flashing mismatched firmware may lead to these common issues:
1. Bluetooth function unavailable
2. CarPlay / Android Auto connection failure
3. Other screen-related malfunctions
Recommended Actions After Incorrect Firmware Flash:
Contact our official after-sales support and provide your unit serial number and vehicle model.
5. After-Sales Support
If you have any further questions, please contact our official customer support team for technical assistance:
(After-sales email:service@pempcar.com)
Jeeky
- Electronics Engineer
