Convert jp2k to psd Online: jp2k2psd
You can use Tom's Editor to easily convert images from
JPEG 2000 .JP2K to Adobe Photoshop
Tom's Editor is a free, online image manipulation and converter program.
Go to Tom's Editor
JPEG 2000 is an image format with extension JP2K.
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.