The story is that I bought a topping dx5 lite used, but in good condition. Everything worked fine, when connecting install the driver, updated the firmware to the latest version 1.14, everything worked fine. Today I turned it on and I see that "incorrect fw ver" is written on the screen. The firmware was required from the official website, it was installed without problems, it worked properly and here it is. I tried to remove the drivers, reinstalled them and the firmware again, installed on another PC... Nothing changes. I found on the forum that people encounter this when the light is turned off, but I have it connected to the armored personnel carrier. Has surge and battery protection. Later, I wrote to the topping company, asked to provide an old version of the firmware in the hope of rolling back, they reset version 1.10. After successful installation, there are no changes either. The screen flashes only 1 time and the inscription returns. Then I asked for version 1.08, no changes either. I don't understand what to do with it, the services refuse to repair it. The version with the fact that the firmware is not installed in this version is excluded, since it was updated from the official website, after the update everything worked properly.
I also happened to notice that after another attempt to "successfully" update the firmware (no changes occurred), pressing the knob entered the dfu mode. This is the first time that the diver and the firmware installer sees the device in this mode. Shows version 1.06. There was also an attempt to update the firmware in the dfu mode (also no changes). The version did not change, it continued to show the 1.06 version. After restarting the device, it was not possible to repeat this procedure. In the dfu mode, the device is not detected. I will attach the screenshots for reference.
Has anyone experienced this and is there any solution? Don't just throw it away...Thank you