I finally got the latest maps working. It's such a difference from my 2014 maps. I can't thank everyone's posts here and especially
@ukkuty enough for all the help he offered me until it worked!
On a second note, when I initially applied the activator (after I had just read the Enthusiast's instructions), the backup did not perform properly, I think, because the rpkpsh4.bin file did not get saved on the backup folder. I tried the pase.bat method but the rpkpsh4 was not getting retrieved.
Where I made a mistake, I think, was at Enthusiast's line 4: "IMPORTANT! Do not remove SD card and manually reboot the unit." I didn't know about manually rebooting the unit then and I just let it do its thing automatically. Plus, I think the wording of this line should be fixed a bit too because the way it is, the second part of the sentence kind of interlinks with the first part's "Do not." It would be more clear for us amateurs if it was worded something like this: "Do not remove SD card! You MUST manually reboot the unit!" Just saying.