Sepura limited keypad portable engineering mode?

[Shuttleman]

Full keypad portables and mobiles can be started with * pressed at poweron. This will enter engineering mode directly at startup.

How does one enter engineering mode with limited keypad portables? Wipe it?

[RA1AIE]

Full keypad portables and mobiles can be started with * pressed at poweron. This will enter engineering mode directly at startup.

How does one enter engineering mode with limited keypad portables? Wipe it?

Why do you need to start a radio in engineering mode?

[Shuttleman]

Just for shits&giggles, trying to document as much as possible :-)
The methods for hidden menus are known on full- and limited keypad models - why not document this too.