09-21-2022, 10:57 PM
I am not at all sure why people feel a compulsion to write the SPI when the
uboot software is somewhat immature
Next to the reset button, very close, is a "short the clock - SPI" button
With no clock, it cannot be read (the SPI)
It seeems that sometimes this button is "flakey", give it a "wiggle" as you push it
OR
Find the schematic for the SPI, find which is clock lead, short it to ground
For about 5 sec at start of boot,,, there MUST be a uboot on emmc or SD (and a OS somewhere)
Then install mtd-utils and zero out the SPI
For TV boxes, with soldered emmc, shorting the clock is a common operation (clock for emmc),,,
for those brave enough to "hack" said TV box, because the image is sometimes wrong
There is info in wiki, for rkdevelop ALL media must be removed, maybe that's what you are doing wrong
uboot software is somewhat immature
Next to the reset button, very close, is a "short the clock - SPI" button
With no clock, it cannot be read (the SPI)
It seeems that sometimes this button is "flakey", give it a "wiggle" as you push it
OR
Find the schematic for the SPI, find which is clock lead, short it to ground
For about 5 sec at start of boot,,, there MUST be a uboot on emmc or SD (and a OS somewhere)
Then install mtd-utils and zero out the SPI
For TV boxes, with soldered emmc, shorting the clock is a common operation (clock for emmc),,,
for those brave enough to "hack" said TV box, because the image is sometimes wrong
There is info in wiki, for rkdevelop ALL media must be removed, maybe that's what you are doing wrong
