Convert psd to mbm Online: psd2mbm
You can use Tom's Editor to easily convert images from
.PSD to Psion Series 5 Bitmap
Tom's Editor is a free, online image manipulation and converter program.
Go to Tom's Editor
PSD is in internal image format of Adobe Photoshop. It can store all the features offered by Photoshop, like layers and paths. Images can be compressed or not.
Psion Series 5 Bitmap
is an image format with extension MBM.