Teensy 4.1 When installing PSRAM64H, the system detects the board and allows programming. It doesn't matter which program, but only once. The test says "PSRAM is OK." Then the system doesn't detect the Teensy port and, naturally, it's impossible to load anything. What could this be? I tested it on three boards with new chips. After removing the chip, the board is visible again. When connecting the USB cable, the LED flashes 9 times
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