I noticed on the Rigol UK site, the latest FW for the DS1000E series is:
DS1000D & E: 00.04.02.SP1
But on the US Rigol site, it says:
DS1000E/D: 00.04.02 {July 28, 2015}
When I viewed the firmware I received from Rigol US today in a hex editor, there were references to 00.04.02.00.00. So I'm a bit confused. The Rigol US guy that emailed me also said they don't have a checksum, which surprised me a bit, since it was my understanding the scope does no FW integrity check before updating it.
I've been holding off on installing any FW until the checksums are confirmed. ;/