UDMH (for Unlimited Dynamic Memory Heap) allows allocating more of your Palm device’s built-in memory to applications than is allowed by default. While most apps don’t need this, emulators, source ports, and other experimental apps often require large amounts of dynamic memory heap to function. UDMH solves this problem at the touch of a button.
In addition to the one-touch setup, UDMH also features per-application settings to selectively disable it or show specific amounts of dynamic heap to a particular application.
Note that UDMH can only allocate memory if it exists! Devices with low built-in storage will need to move apps to an external SD card to benefit from UDMH.
Use MultiUserHack to register without changing your primary HotSync ID
Use the developer’s official key generator online, here. PalmDB appreciates their generosity!