A few days ago, I was able to get the unit into DFU mode and it was
recognized in Device Manager. I installed the latest Firmware and was still
getting a white screen. At the suggestion of another post, I left the
analyzer off for a few days with the battery disconnected. I powered it
back up today with the results that it now shows in Device Manager and I
was just able to run a calibration through NanoVNA Saver but the screen is
still white.
Perry
On Tue, May 31, 2022 at 4:24 PM Clyde Lambert <clyde.lambert@...>
wrote:
Hello,
Being a past bata tester of FW for this unit, I have dealt with your
problem.
The way I cured it is as follows:
First shut down the NanoVNA.
Remove the back cover.
Using small tweezers or what you ha e short the boot pad to the vcc pad
next to it. While keeping the short, turn on the NanoVNA.
Remove the short, shut the NanoVNA off. Replace the back cover.
Now turn the unit on.
You should be able to re install the new, or old, FW by putting your
NanoVNA in DFU mode via the menu,
I have had to do this several times so, I installed a micro switch to
short the two pins without having to take the unit apart.
Clyde KC7BJE
Then turn the
