ok so i'm looking at the FCC photos of the phone, and there's a test pad that goes underneath the mediatek chip under some shielding, and when i zoom in there, the connectors are all arranged in a grid, and i'm wondering if it matches the ball map which if so might let me label the traces and gain a lot of understanding. i pursued it because the area seemed like it might be near AE6, although i don't actually know the orientation of the ball map for sure or anything. i tried grounding the directly connected test pad but this did not seem to make the phone show on dmesg. these photos are still at https://fcc.report/FCC-ID/2APD4-A95J/5240933.pdf . i'm looking at photo 5 on page 3, zoomed in on the left half under the removed shielding above the card slot. i think this might be the back of mt6739 chip, the front of which i think is shown in photo 8 on page 4. it's "upside down", the bottom aiming toward the square hole in which the camera sits. upon closer inspection it looks like most of these traces that are organized in a grid are off to the side of the chip, toward the front of the card slot and the little off-shot notch in the pcb in front of the test pads. there's another, slightly larger chip here immediately adjacent to the mediatek chip. i think recalling from the motherboard repair videos that this might be the emmc, not sure. i wonder if there's a way to disable it. but grounding that pad didn't seem to do it. 1929 i think this is the emmc chip in the photo, kmqe60013b-b318: https://semiconductor.samsung.com/us/mcp/model/lpddr5-umcp/kmqe60013b-b318/ . it's 16GB. so if i can find any of emmc data, emmc clk, or mt6739 kp0col, then in theory i can disable the corrupt bootrom and reflash the phone. i could also try to physically remove the emmc chip ! just to know there should be a reliable solution here. i guess to do that i would maybe heat the device in an oven and gently lift it with a precise tool uncertain 1931 :S thinking i may not get the phone repaired today but i can try to learn more about it, and there's a chance i would something i wasn't prepared qjuite to try was soldering ground to every test pad in sequence, and seeing if the phone went into brom in any of those it's also possible my microusb cable is bad and i should try it with another device 1933 i see a bunch of camera buses on one side that aren't on the other, so i assume the pcb is multilayer and it's hard to inspect most of the traces. don't know well. 1934 holy frack i went to websearch again for "finding kpcol0 or kp0col or kcol0" and the search results are now empty O_O it used to give me a lot of results this seems really unfortunate for repairing mediatek phones. 1934