This is a restart upgrade attempt due to an unsuccessful upgrade.Hold down the knob for more than 6 seconds to reset the entire system, and then the phone's hotspot upgrade is the most convenient.
The principle here is that using the harmonic compensation function of Ess DAC, only the second and third harmonics can be compensated. As for which set of data is the best, many experiments are needed. The best number depends on many factors, such as circuit structure, PCB layout, filter...
Each time SGD1 is powered on, WiFi will be turned on to detect and update the firmware. If there is any update, it will be upgraded. If there is no new firmware, WiFi will be turned off in a minute. The silent upgrade currently in use.
When SGD1 is powered on again, WiFi will be turned on for...
Updated firmware around early April.
Can you still operate the upgrade?
There is no problem with the upgrade tool. There is a certain probability that the upgrade fails.
There are a few things to be said about SGD1 testing:
Conclusion first: the unit under test is most likely not Upgraded(OTA) to the latest firmware (there are a small number of early units in Europe), as I judge from the output amplitude of the test.The unit output amplitude of the test was...
The UI and electronic circuit of the screen are designed by ourselves, and the plastic mold and the assembly and testing of the screen module are provided by our cooperating OEM. Audio products have different needs for screens, and customized screens are the most optimized solution to meet our...