SIEMENS S7-400 Flash Memory Card Writing Query

I am trying to quickly find out whether the SIEMENS S7-400 CPU 414-2 (6ES7414-2XG03-0AB0) V1.12 can write to the flash card mounted in it (MC952 6ES7952-1KL00-0AA0) using the
"PLC/Load user program on memory card" command in Simatic Manager or whether I can use the SIEMENS S5 prommer C79451-A3449-A11.

The Siemens documentation suggests this is possible but anecdotal information suggest an S5 prommer was used. I don't have any of this equipment with me just now and need to know before an impending field visit.

Does anyone have experience of this?

Thanks.

You can use the function Download user program to memory card.
I do not think you can use the S5 Prommer, even if there is a slot that seems to fit an S7-400 MC card.

Thanks.