I have a Z120BT with the 2015 maps.
Offset 15AEFC did not match the first post data, but I found the pattern at 15B02C.
Changing offset 15B02C from 02 00 56 E3 to 09 00 56 E3 made the SAFE MODE menu button appear in the settings menu. Safe mode button appears to retain the setting when the car is switched on/off but neither setting prevents the parking brake warning from appearing on boot up.
Changing offset 15AEE8 from 01 10 A0 E3 to 00 10 A0 E3 made no difference that I could tell.
There are many pattern matches for "01 10 A0 E3" so I guessed wildly -- The pattern for Safe Mode was 130 h