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.