yeah so I was this close to "giving up" on this random-ass slim I was working on. after wasting about 3 hours checking and triple checking everything I got fed up and started trying random shit before closing up the xbox.
xell finally booted after I programmed the tx coolrunner with "SlimPlusPost.xsvf" (this file comes with all other xsvf) and set the chip to "phat" mode even though this is a slim.
doesn't make any sense but if you ever run into any trinity that wont glitch then try this. cant stop shaking my head. wtfbruh
EDIT: can someone edit the thread title to "tx coolrunner fact"