Just download and trying out evaluation version uVision4 for 8051, try to build a project from the examples directory for RTX51-TINY but get error stating should upgrade to PK51. Makes no sense to me --- surely all required is included in the eval s/ware ?
***FATAL ERROR L257: RTX51-TINY requires upgrade to PK51 Target not created
No doubt I am doing something wrong/omitting something -- Any help appreciated