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From: <bp@www.zefox.net>
Newsgroups: comp.sys.raspberry-pi
Subject: Using serial console with Pi2 v1.1 firmware
Date: Sun, 7 Apr 2024 17:40:25 -0000 (UTC)
Organization: A noiseless patient Spider
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Summary: How to break out of netboot loop?
Keywords: Pi2v1.1, armv7, firmware reset serial console
User-Agent: tin/2.6.2-20221225 ("Pittyvaich") (FreeBSD/14.0-RELEASE-p5 (arm64))
Cancel-Lock: sha1:v0Zs+PKCstJ6pnEoJfPPIPix6E4=
Bytes: 1336

I've got a rather early Pi2 v1.1 (so, armv7) that is getting
stuck in a netboot loop. Is there a keystroke sequence on the
serial console that will break out of the loop, or at least
force a reset?

The console displays

....
Trying booting from Ethernet device addr 5
Initialise ethernet with MAC b8:27:eb:1a:5a:4b
Wait for Link up
Failed to initialise link
....

Thanks for reading,

bob prohaska