Not sure if this is a typo or is official, but Simprograms offers a patch from 1.32 to 1.33 here
The updated page lists the following with links:
Update to version 1.33.2.015001 from version 1.32.3.015001
Update to version 1.33.2.015002 from version 1.32.3.015002
Update to version 1.33.2.015003 from version 1.32.3.015003
Update to version 1.33.2.015005 from version 1.32.3.015005
Update to version 1.33.2.015017 from version 1.32.3.015017
Update to version 1.33.2 (BIG 1GB UPDATE)
I patched from 1.31 to 1.33, therefore I do not know if the above patches work. Comment back if it worked for you.