i had this problem with 1.5 as well, and was unable to flash 1.5, but after wiping data, when i install .zip, it gets stuck on "installing update". has anyone else came across this? ive redownloaded 1.5 over and over, and just redownloaded 2.0 and am going to try again. anybody have any advice?
Try installing a fresh version of Fission (do not get a backup) and then try installing Libetry and see what happens.... I believe you might have modified some file when running fission which is causing you all these issues... ( I might be wrong but that came to my mind so thought of giving you my 2 cents)
Also my bad about telling you that it does not say "installing update", I did not see that it should infact say that when it is opening the update package....