Thanks. I did all that, still no S21. I think it's blown up. There is also
an incompatibility between the firmware files I found and the SGMicro
bootloader pgm. It was listed as "new out of box" and the protective screen
plastic has lots of marks on it, though the unit was sealed. Anyone can
seal those plastic envelopes. Now the seller has nothing to sell and does
not respond.
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On Fri, Oct 4, 2019 at 1:52 PM hwalker <herbwalker2476@...> wrote:
Ken,
The 2-trace, unshielded ports, black unit is usually delivered
uncalibrated and is not useable out of the box. The following usually gets
it going:
First select "RESET" under the "CAL" menu and then perform the normal
calibration procedure and save to location "0".
On a Windows PC you need to select a firmware with the .dfu extension for
use with the flash utility when upgrading your device.
Herb
