I Feel at Home Already...
Thank You for taking the time to answer my silly questions, BUT there are some little misunderstandings that I believe is My Fault for Not Pointing them Out Clearly...
First, I have enough Free space on that EXT4 Partition (about 2.7Gb Free) and yet that Error pops up!
(For the record, I disabled the Auto-link feature of Link2SD so that I Could manually Link whatever I Want, I Even put everything Back to The Internal Storage FFS! Nothing Changed, That Error is One Persistent Son of a Flower! :-| )
Second, as I understand from your words, any System Update should be Permanent and STAY even after the Hard Reset, but again this is the problem, I checked! Right now my "Build Number" is: 1.00.401.14 and If you look at your own Build Number (You put it in a screenshot some posts above), the Latest Build Number (Which I Had When My Phone Was Updated) is: 1.01.862.14
Anyways, You said I could Flash The Stock ROM and Get back to the Good Ol' Days... May I Have That Please? I Will send you an email For sure...
I have included some screenshots, If they can be of any Help!
Follow this tutorial pls, its made by me, everything is explained purely. If you have some questions, contact me BEFORE flashing. Tnx!