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Old 05-21-2018, 12:30 AM   #4
commandar
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Join Date: Apr 2015
Drives: 2013 FR-S
Location: Columbus, GA
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Confirming the same issue and resolution for me. DEV121.dll error no matter what tuning file I tried to add to the tablet. Flashing to original tune, wiping the tablet, and rereading fixed it.

I was already on a v4 tune flashed a few weeks ago, so I don't know that flashing from an old version is necessarily the cause. I was just looking to update my IAM value. I did just get a new PC, however, and had to set OFM back up immediately before this.
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