Originally Posted by G.T.
proDOOMman: Thank you so much
.. it really works ...
(tips for all people, who will add "update_dev-key" to the whitelist file - order isnīt important, but after line "update_dev-key" must be "ENTER" ... I had all lines on the same level, but it doesnīt works ...)
Hello. I have the same problem as you. When I tried install or uninstall developer-keystore-installer (whitelist was edited) I received message "Update not succesful" and in the left corner of scren shows "U007". I have Kindle only with WIFI fw 3.1, and use update_dev-key_0.3.N_k3w_install.bin
How di you resolve the problem?