50G Solver - Use softkeys?

[Giuseppe Donnini]

Press and hold down (as opposed to press and release) Right Shift, then press NUM.SLV. This should give you access to the original HP-48GX LS+SOLVE menu. From there, press the ROOT menu key, then the SOLVR menu key, exactly as you would do on the HP-48GX.

(You may also use 74 MENU to display the same menu, or even 30 MENU, which immediately enters HP Solve, but requires a valid EQ variable beforehand.)