I've pushed both the nanoVNA_900_AA_20190611.dfu and nanoVNA_900_ch_20190505.dfu firmware to my 'Gecko' VNA and have found that they were compiled by gen111.taobao.com as that URL appears on the startup screen under the nanoVNA name.

I would be interested to hear if any others have pushed any of the firmware found in the download archives mentioned previously in this group.

I've noticed that they don't always start up and just hang at the boot screen.

Comments?