Well, I don't have an SL75 to test...
But, besides the above mentioned discussion, the fact is that SL75 is advertised that is has available 52Mb memory, whereas S75 is advertised that it has available 20Mb memory...
If both have a fullflash of 64Mb then how the heck, the SL75 does have available these 52 Mb for storing various objects ?
Anyway, there is a tool : BFXreader.exe to test what exists at 0xA4000000 and above...
A simple read of the first segment above 64Mb would be :
BFXReader.exe 3 0xA4000000 0x00100000 115200
the 3 is for Com port: Com3 and 115200 is for speed...
(I don't know if this can get any higher speed...)
This must be given from command line or 'Command Prompt' (from Assesories)
A batch file 'sl75_above_64M.bat' is included for anyone that wants to all 32Mb mem just above the first 64Mb !
(Edit this in line 2 to set your Com port, and may try a different speed at line 3).
Need to be in "Normal" or "Service" mode and maybe SKey must be entered (I am not sure of the last!).