Just for shits and giggles, at step 4 instead of selecting db2020, I selected pnx5230 and it managed to connect into the phone and managed to flash with:
W380_R10CA001_MAIN_NAM_1_LE_RED53.mbn, which is the one currently on the phone.
When I tried to install custpack:
W380a_1207-7304_R12A_Fido_Canada
nothing happened. No progress bar, nothing suggesting anything was going on.
The reason I know nothing happened is because the password on the main screen when I boot up the phone is still there.