I don't see why you should be concerned, all of my speedos were upgraded today and all took the new firmware with no issues. The software is now a new programme, V2, and should be a lot better. When plugging in the speedo make sure the software says the ESC is connected and if you are concerned just keep an eye on it for a couple of mins and make sure it doesn't drop out before you d the upgrade, ive not that ive had that problem though.
I used the new software today in 2wd and it makes the speedo feel much nicer and has sorted out any of my previous issues.
Ian
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