Ah ha, I think you have used wrong image, rock64 is
probably for rk3328, I might be wrong
And this is why, unless you are REALLY sure, it is not so good to flash SPI
There is a jumper connection to short SPI clock, so not such a big deal
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opps, I see that maybe you really have a rock64, for some reason I thought you had rockPro
anyway, I think the clock signal is on pin7 so jumper 7->9 for a few seconds when booting (40 pin connector)
probably for rk3328, I might be wrong
And this is why, unless you are REALLY sure, it is not so good to flash SPI
There is a jumper connection to short SPI clock, so not such a big deal
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opps, I see that maybe you really have a rock64, for some reason I thought you had rockPro
anyway, I think the clock signal is on pin7 so jumper 7->9 for a few seconds when booting (40 pin connector)