My new DSO 201 was also delivered with v 4.30 and I played with it some days before upgrading to BenF’s 3.64.
What I remember:
- below 10µs/div no stable trigger
- wrong or no Measurement of frequency when >50kHz
- no 5s/div or 10s/div range
- small voltages shown as zero
- negative voltages not shown
- Linethickness not constant
With BenF 3.64 (patched version for ILI_9341 driver)
- Trigger works better
- displays exact frequency up to 500kHz (theoretical limit)
- better resolution for voltage readout
- Zero Cal is automatic and Cal is better in steps of 1LSB
- less noise at 10mV/div due to Average mode
There are countless improvements in BenF’s Firmware, please read the revisions.txt.
Personally I’m very happy with this upgrade, now it is a usable tool.