WP34S - deleting a "buP" program

[CR Haeger]

Hello,

I would like to know how to delete a program that has been stored or backed up using the PSTO command.

In my case, I stored program 'F' by pointing to it in RAM then using PSTO. It now shows in both Lib and bUP.

I have been unsuccessful in being able to now delete this program from the calculator. I have tried:
* Read pg 109-119 and the IOP (PSTO, PCRL and RESET) in the v3.3 owners manual
* f-CLP on both the RAM and buP versions of 'F'
* RESET command
* Pulling both batteries

Let me know if there are proper software commands to delete this or if a physical PIN RESET should be used.

Thanks.