Can you verify the method does not work on fx 570ex? And, at step 2, when you press "up" does the screen show "1"? That character is FE FD. I can also brush this character in Math mode. Can you verify this?
EDIT: That character is FE FB. Method: (Math input mode) Brush a clean box (character 19) (I) 19 00 00 00 00 00 ....... [Right] (brush out of the box) 19 00 (I) 00 00 00 00 ....... [shift] [8] [1] [1] 19 00 FE 01 (I) 00 00 ....... [shift] [8] [1] [1] 19 00 FE 00 FE 01 (I) ....... [del] (Note here byte 4 is 0 not 1. That is the key point) 19 00 FE 00 (I) 00 01 ....... [left] (The calculator does not delete the 01 at byte 6. That is not necessary) 19 00 (I) FE 00 00 01 ...... [del] 19 (I) FE 00 00 00 01 ...... [M+] (Screen show Syntax ERROR) 19 FE FB 1A 00 01 ......... [Left] Now use separation method if you want to extract 1E 1B. This freeze the emulator, I think that will work on real calculator.