Well I took my tegra board to someone who said they could do it and they ended up butchering it.
I dropped it off with the replacement swissbit, told him I could not easily replace the board and to please be extremely careful to not pull any pads or traces.
He called me and said the replacement chip was not correct, the pinout didn’t match. He went on to say must have dropped it or something because the “tracks” had damaged. I asked him to re-ball the old chip and I’d take it like that. I picked it up and he’d placed the old chip back on the board. He said he’d “rebuilt the tracks as best he could” I asked if he was talking about the PCB traces and he said “yeah-yeah”. The board is pretty cooked now and the chip is clearly not placed correctly. I’m now seeking a shop that can assess if the board is wrecked and if not, place the new chip. I probably should have avoided the whole ordeal by sending it to
@EV-Fixme but I wanted to tinker with it myself.
Here are before and after photos.
Hi Dave. I suffered a similar problem, but had a happy ending. I have to say it was an ordeal, and my car was grounded for a month.
First, do you have an image of the eMMC? This is pretty important. If you have it, great! Your life became a bit easier. If you don't... at this point your best chance might be to go to Tesla and give one kidney as payment.
If you have the image, just buy another eMMC and put it there. Contact this guy:
Mail-in Data Recovery & Repair Services specializing in iPhone, iPad and Android devices. We have some of the highest data recovery success rates, Call now (714) 931-4325
imicroboardrepairs.com
He does magic, and will easily replace your eMMC. He does this regularly. Programming runs on you (this guy just does the soldering/desoldering part). You can send him the old board, and he might give you an assessment, but since he can't test it, he won't be able to tell you whether it works or not. Actually he saved my toasted board and my old chip, and I keep it in case tomorrow I upgrade to MCU2, so I don't have to pay the core charge (because I'm using a chip not recognized by Tesla).
If you want to play safe, you can buy another tegra board. But since the firmwares between the tegra and the gateway need to match, everything is a bit messed up. For this you first might want to update your new board to the right firmware. You can try
@LayZ in this forum. He should be able to make your firmwares match again. Then you go with Justin at imicroboard and you're good to go.
Again, this is terribly complicated and a bit expensive. I was lucky because the guy that toasted my board was honest, and he agreed to pay for another eMMC and a tegra board. But it doesn't look like your guy will do that. The guys at
@EV-Fixme might have a solution for this, but I guess any way you go it will be expensive, time consuming and a pain in the neck.
I'm really sorry. I hope you figure it out.