HP 28s rom dump with 50g

[JDW]

(03-23-2015 11:59 AM)jebem Wrote:  I have followed the excellent Christoph Giesselink work/information, and did use a HP-48G+ (that have plenty of internal memory for this job) to do a rom dump for another HP model (a 27S).

I've read through Christoph Giesselink's "CLAMSHELL.TXT" and see that a 28S ROM dump can be done with a base 128k model 48GX in 2 parts or all at once with a 128k card used as merged RAM. Even so, specifics on how to use a 50g to accomplish this feat, saving the 28S ROM to SD card for easy transfer to PC or Mac, are desirable.

Has no one ever used a 50g to read the entire ROM of a 28S, saving it to SD card?