The wrong date can also affect certificates, because their authorization is time-sensitive. Your "missing certificate" error could be a side effect of wrong date. You can set the date manually (a "search" command), if you cannot update it via 3G.
FYI, this sort of question can be answered much more quickly and thoroughly if posted in the Kindle Developers Corner sub-forum, where the kindle hackers hang out.
But yeah, eschwartz's answer is relevant here too, in that the recent required update (which must now be side-loaded over USB) also affects certificates.
Last edited by geekmaster; 04-23-2016 at 09:29 PM.
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