Hemifever tuning problems.

[Grizman404]

Just got my hemi fever tuner and tried to download a tune but has been on the unlocking ecu screen for about 30 min. Any ideas, I'm scared to pull it out and it possibly fry my comp.

 

[Fast69Mopar]

Just got my hemi fever tuner and tried to download a tune but has been on the unlocking ecu screen for about 30 min. Any ideas, I'm scared to pull it out and it possibly fry my comp.

Did you call @hemifever to get some guidance?

Did you have a battery charger connected while attempting flash the tune?

Is/was you cable properly connected? Not loose or wobbly while connected?

Have you ever had any trouble flashing a tune or is this your first attempt?

 

[Yeret]

Did you have the power on (that is, key on, engine off)?

Before I first flashed my ECU with a tune with an SCT tuner, I carefully read the obviously Engrish instructions and, to the best of my ability, translated them as "plug in tuner and wait." I was met a couple of times with an error message saying that it couldn't connect to the computer.

I pondered, and, after a few minutes, got brain waves that said "hey, doesn't the ECU have to be energized for it to respond or otherwise do anything?" I turned the power on, tried to upload the tune again and BOOM, it worked!

So, yeah, make sure the ECU is energized before trying to flash it.

 

[oPtimus]

This exact thing happened to me earlier today and I was freaking out of course. But luckily I just turned the key off and unplugged the tuner and the truck started fine. So if this happens to anyone else feel free to safely unplug the tuner and don't have a heart attack like I did. I haven't tried tuning it again I'm going to wait for a response from hemivefer first