XO1.75

[James Cameron]

Based on memory, 00 means fault in RAM.  Replace RAM.  Could also be electrostatic damage to CPU or RAM.  Could also be age degradation of silicon chips.

To find the real meaning of 00 takes reading the C code of the CForth startup payload, which is loaded from SPI Flash.

There is no involvement of eMMC or SD card slots.

On Sat, Jun 06, 2020 at 11:41:33AM +0000, Yioryos Asprobounitis wrote:
> Hi list
> I dug out my XOs to check their condition and my XO-1.75 (SKU203) refuses to boot as if it was wiped out clean or has no microSD card at all.
> The screen comes up and nothing further.
> Firmware check just show a double zero [00] 
> Trying to install a fresh OS from USB fails (with the same double zero)
> A fast wiki search did not come up with anything relevant.
> If someone can point me to the right direction I would appreciate it.
> Thanks
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-- 
James Cameron
http://quozl.netrek.org/