Table of Contents
Introduction
The XU4 is fully software compatible with XU3!
However, the XU4 is more compact, more affordable and more expandable.
XU4 PCB revision history
| LOT-ID | PCB Revision | Description |
| EL-1507 | rev0.1 20150527 | The first production version |
| EL-1510 | rev0.1 20150825 | Add a R99 of Pull-Down resistor on the PMIC PSHOLD signal. Add a C289 of dummy capacitor for physical balancing the heatsink on the PCB |
| EL-1511 | rev0.1 20150825 | |
| EL-1601 | rev0.1 20150825 | |
| EL-1603 | rev0.1 20151201 | Added a pull-up Resistor on a UART RXD PIN.\\Added a 100uF capacitor on DC JACK. |
| EL-1606 | rev0.1 20151201 | RILIM of NCP380 is changed to 6.49kΩ and USB current limits at 2A. |
We did not change the PCB revision because any key features were not changed nor added.
Hardware and Peripherals
Software Platform
Expansion IO and Accessories
Android
Software(OS) Release
Please read **THIS** once before you start to download and flashing S/W release on your ODROID device.