My brother-in-law's Xbox1 has been acting up recently. I installed a X2Lite chip on it years ago (soldered in a pin header), and it worked consistently well, no issues. Recently, however, it has started frag'ing intermittently when attempting to boot from the chip (chip enabled/ON). The Xbox will boot fine to the MS Dashboard when the chip is switched off, but not when it's on.
I have tirelessly checked voltages from ALL pins on the header and everything looks perfect there, voltages check out from the multimeter, I even re-soldered all the header pins on LPC just to make sure. The damn chip still intermittently frags. Sometimes it boots to the modchip, other times it does the 3 reboots + frag. The D0 wire is in place solidly, and everything is grounded. Has the chip simply gone bad? Again, sometimes it'll work just fine. I modified my own Xbox and have never had any issues.