Friends,

Whew...finally. I got it to (somehow) work, lol...I'm posting here to document my "little adventure" to have this solved...initially for my own reference, but might as well share it. But first, I'd like to thank the following through the course of this adventure:

HtheB - for accommodating my questions via PM...very nice guy...and for giving me a "very good tip" about the N950.
Arie - sent him a PM but unfortunately he was already offline (still would like to thank him)...sent him a follow-up PM to mention that it is solved now.
mikhail_ramalho - for answering my queries via posts in the thread as well as via PM.
coderus - haven't had interaction with him, but would like to thank him for the "back-ported" versions of unrestricted-system-ui.
Vesuri - of course, for coming up with the patch.

1. Flash the N950
2. Enable Developer Mode
3. Enable/Install Inception

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(steps I experimented on):

4. Installed a "back-ported" version of unrestricted-system-ui by coderus from Post #115 of the "Unrestricted system-ui" thread in lieu of the regular versions from MAG's repository: libnotificationsystem, unrestricted-system-ui, beep-icons

Note: Installed them via Inception, from Root Terminal.

5. Initially I was trying my best to install mikhail's version of libmeegotouchcore0, since I had the exact same experience as him, where the installation was complaining that I was trying to install a higher version when I used Veruri's version of libmeegotouchcore0.

6. Through conversation via PM with HtheB, I was advised that Vesuri's version will work, even on PR 1.2. So at this point where I had used the "back-ported" version of unrestricted-system-ui by coderus I mentioned in Step 4, and since I have been re-flashing, I gave it one more shot. Went on to installing Vesuri's libmeegotouchcore0, in spite of Terminal giving me the same complaint/errors (installed via Inception from Root Terminal).

7. Installed Vesuri's landscape theme, and then reboot the device.

So far, so good.,,the Clock, Phone, Music apps rotate to landscape (Store already opens in landscape when physical keyboard is open prior - already mentioned by Vesuri and also confirmed it).

At this point, I am just wondering if there will be anticipated problems in the future, since I installed:

1. a "back-ported" version of unrestricted system-ui
2. libmeegotouchcore0 that is supposed to be for PR 1.3

Any thoughts will be appreciated.

PS: I am still hoping that I can get mikhail's version to work.