Installing OpenBSD on the Pomera DM250{,XY?}
These are my notes and pre-built images for getting OpenBSD-current installed on the Japanese-model Pomera DM250, DM250X, and DM250XY.
Much of my work has not yet been committed upstream so installation currently requires a custom kernel and U-Boot image which are provided here. OpenBSD support is still improving and may not be stable at any given time. Install at your own risk. These risks include:
If the battery completely drains due to a software bug, the device may not power on correctly and will not be able to recharge its battery (see below ).
If the device cannot boot properly into U-Boot, you may need to recover it through a USB cable which may also require having to open the device (see recovery ).
Note: Do not use these instructions for the US-model DM250US yet. That device has a different power charging chip and keyboard layout.
This is optional but recommended. The tools and instructions at EKESETE.net should be used to make a full eMMC backup before doing anything.