I have used Express several times to update my 2545, and tried to keep up with updates, but it still behaves like immature software:
When trying to update to EU 2015.40 for Computer and Device...
1. Seemed to be downloading ok, with a time remaining of 1h 12m ... for over two hours. Why are the times not more realistic?
2. After about 2h 30m it gave a cryptic message 'There was an error installing the update'. No other clues at all. Why do the error messages give no real information whatsoever?
3. Tried same download again - same error after a few moments. But still seemed to be something being downloaded!
4. Stopped and started Express, then tried again, which seemed to re-start downloading. Time remaining this time started at 24 hours!! but decreased to 4h 30m pretty rapidly. But then failed with same error.
5. Decided to check Express version, and saw v4.0.11.0 should be available. Why did Express not tell me this when it was started?
6. Ran 'Check for updates' which started downloading something ... then it disappeared!
7. Tried 'Check for updates' again ... again it downloaded then disappeared ... but this time I noticed a brief red 'Failed' message. Why is error message not persistant and not helpful?
8. Tried 'Check for updates' again ... and this time it updated to 4.0.11.0 ok.
9. Tried to update map again ... ran for about 10 minutes (claiming 2 hours remaining), then failed again as it did at first.
10. So, after downloading over 5GB today (50% of my MONTHLY allowance!), I am no further forwards.
What can I try next - when I feel brave enough again?
Just noticed that something is still being downloaded at a steady 4 Mbps.
Sigh. Will see if a re-boot stops it. And it has. Phew.