Device doesn't enter MaskRom upgrade mode

Suhach

I'm use AIO-3568J and have 2 Core-3568J core boards. One of them works normally, but second is bricked. I tried to enter bricked one in MaskRom mode using this manual https://wiki.t-firefly.com/en/Core-3568J/04-maskrom_mode.html , but device don't enter MaskRom mode (RKDevTool still writing "No Devices found"). So i tried enter Maskrom mode on working one, but it doesn't enter MaskRom mode too. All wires were tested with multimeter. I use original USB data cable and power supply from standart package. All drivers installed on PC by DriverAssistant. Have you any ideas about this issue?

Suhach

Liuth Posted at 9/7/2022 11:20
the wiki is not very articulate
First connect the usb cable, then short two test points on core boa ...

Thank you for the answer. It helped a lot