For SL04 boxes with firmware versions earlier than V6.5, the DMX512 refresh rate was 40-44Hz.
We found that some older lighting fixtures, due to insufficient processing speed, might not be able to handle high refresh rate DMX data over a long period, which could occasionally cause flickering. Although this is an issue with the fixtures, customers may think it is a problem with our control box. To be compatible with some older lighting equipment, the firmware version 6.7 lowers the DMX512 refresh rate to 30Hz.
The main difference between firmware V6.5 and V6.7 is the DMX512 refresh rate, everything else remains the same.
V6.5 DMX512 refresh rate: 40-44Hz
V6.7 DMX512 refresh rate: fixed at 30Hz
Additionally:
The automatic upgrade program has not been completed yet. The main reason is that the original chip manufacturer had promised to provide the programming protocol and SDK for the chip, but now the manufacturer has changed its mind. The chip manufacturer is unwilling to provide the programming protocol for the chip, nor the SDK for programming the chip. Therefore, we have no choice but to spend time and effort on reverse-engineering the programming protocol of the chip, which may take a long time.
Currently, the chip can only be programmed using the official programming tool. If you need to upgrade to version 6.7, you can either send it back to us for upgrading, or wait until we complete the automatic upgrade program so that you can upgrade it yourself.