I can see 2 of the 4 sides in the photo. I regret not taking a photo of mine before I started messing with the soldering iron. I'll attempt to replace the chip this weekend. As far as I know, bridges should be present on the PCB itself. It's not something that's added later. They only appear to be manually placed, but I heard there's are actual traces underneath. Will find out soon enough. I also have a replacement Evergreen CPU coming in a few weeks. I will probably do a manual job on Gainbery, but not test it till I try Evergreen first, because if I botch this, and end up frying the motherboard, it would be a stupid thing to do, before the other chip shows up. Only if the other one doesn't work (seller claims guaranteed functionality, but no visual proof, so who knows). Another regret is that I did not record original pin settings on the motherboard that came with the dead 5x86. The settings for my motherboard (Matsonic M601) are undocumented. So I have to guess, which chip matches the right configuration. Probably the same setting as DX2-66. I don't think the chip can be fried with incorrect jumpers. The worst that can happen, is I'll disrupt the VLB. The motherboard only runs 5V to the CPU, so aside from 5x86 upgrades with 5 to 3.3 regulator, there are no options above DX2. Overdrives don't work. I tested many. For me incentive to upgrade is significant, because despite having a chip selection all the way up to DX4-120, I can use none of them. I tried ordering 5V to 3.3V socket adapters awhile ago, but it turned out to be a scam. I thought I wasn't going to go back to the ruined Gainbery, but now it's either that, or the Evergreen, which should be an identical copy. I want to bring the system to Pentium level. Maybe even overclock to 160. Back in the day I had a P-100, and this 486 is the closest thing to what I remember from the 90's. My P-100 was bottom of the line, and the 486 I made to replace it, is top of the line, except the CPU, which is a half to a third too slow, compared to what I had. 5x86 is advertised as a P-75 equivalent. I have my doubts, but it's still better than a DX2-66. I'm less worried about the CPU and more about the voltage regulator. I hope replacement chips I got aren't fakes. If there's anything that could put an instant end to my motherboard, it would be a fake voltage regulator that shorts the 5V line, or sends it straight through to the 3.3V line.
Quick question - there is a missing pin on one of the sockets. Is that accidental damage, or deliberate? I don't know the 486 pinout. I assume some pins are redundant or NR.