Gday Jennifer
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I'd like to ask Andrew what the firmware updates need to be.
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Depends.
For the 497EP, I use 5CE1 as my baseline.
The latest firmware Meade has released is 5CE2,
but this only added the LT scopes to the factory test routines
and as such, i have never bothered to rewrite my patches.
If you have 5CE2 loaded, you DO have the pulseguiding bug
( plus a dozen or more other bugs )
Note! PEC is also totally screwed, so if you have used that
it will account for some errors in tracking.
For the Audiostars, its a little more complex.
There are now two current firmwares A1F7 and A2S6
They are 99.9% identical to each other but the S has dual language Spanish and the F has dual language French.
Both firmwares have the pulseguide and PEC bugs plus a whole heap of others.
I have only patched A1F7 and don't propose to do A2S6 as its too much work for no return. A1F7 can be put onto a Spanish box with the only downside that when you select language, you will get French text and Spanish speech.
I cant understand either so it doesnt bother me
One last thing with the Audiostars. Meade silently changed the memory chips used in the later units and they use different commands.
Loading anything earlier than A1F7 or A2S6 onto these boxes will semi brick them. We have a way to fix it, but it requires a special process.
Soooooooooooooo, if you have 5CE2, i suggest you load 5CE1 with the latest patches, and a lot of functionality will come back.
I strongly suggest you use ( the free ) Starpatch loader
http://www.stargps.ca/downloads.htm
to do the load as this is now configured to deal with 497EP vs 497Audiostars, and is much more robust than Meades ASU.
The Starpatch download site holds the application, as well as the 5CE1 rom files and patches.
For the 497EP and Audiostar, the ASU also wont load tours etc properly. If you do want to add that sort of stuff, you need to use my PEC editor.
( which does a lot more than PEC )
Andrew