Datasheet

6.3 Questions and answers
Are there other attack vectors which can be used to unlock the console serial line?
Yes. Davis obviously don’t apply NSA security standards to their products.
Can the ATtiny25/45/85 be removed from the console after a successful authentication?
Yes, it can. It seems that the authentication will remain valid until the console is reset.
Still, please note the caution on page 2 of this document.
Can a US console be turned into a EU console?
Yes, it can — by running these commands:
TST 1
BAND 1
DOMAIN 2
TST 0
...then power down or reset the console. This is probably what Davis does during the
”burn in” stage, a process which is briefly mentioned in the Quality Assurance Statement
enclosed with each console. The BAND/DOMAIN values can be read by issuing the
same commands without the numeric arguments. Please forward valid combinations
for non-US consoles to the author.
Can a green-dot console be downgraded to run firmware v. 1.90?
No, that simply won’t work. An educated guess would be that the installed bootloader
is a true showstopper for this approach.
Can I upgrade from firmware v. 1.90 to v. 3.12, then revert to v. 1.90 again?
Yes, provided the console is not a green dot unit. Consoles originally shipped with
firmware version 1.90 can be upgraded to version 3.12. If, for some reason, a down-
grade is desired, simply run the v. 1.90 installer to re-install the ”old” firmware version.
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