How to Recover/Replace ECU Thread

I've been trying to find one for mine for months and it's proving difficult. The ECU I have, 0CP42, must be super rare.

 

Wow looking around that is a rare one outside of paying 900$ for new which is outrageous. I tried https://www.car-part.com and there seemed to be some possible hits in there. I wonder why that ECU is so unique, you must have an uncommon configuration. Like in my case theyre semi rare as it’s a SR5 doublecab 4x4 without the sr5 upgrade package which is a different ECU number.

 

Has anyone noticed that after you write a tune with HPT, you get a message that says, When doing another write disconnect the battery before doing the write, something like that. So Everytime I am going to write a new tune, I disconnect the negative cable and go prepping everything that I need, battery charger, disconnecting water pump, etc. It takes about a minute or two to do that, then I reconnect the neg cable and do the write, making sure everything is off and I am on my phone hotspot.

 

i asked the same question a while back, and it seems like most people dont do that

 

yea, not sure why it's that one. there's nothing unusual about my truck as far as i know. I bought one off car-part that said it was a 0cp42, and when it showed up it was a different p/n. luckily the yard was cool about returning it and gave me a refund

 

Just like they say to turn off all sources of battery drain or make sure you have good internet connection, I will do what HPT says. It doesn't hurt and take a minute or 2. Anything to avoid a bricked ECU.

 

For you guys that have swapped ecm's and had to reprogram the immobilizer, when you jumped obd2 pin 4&13, did your dash lights go crazy once you turned the key on?