[notallbad]

Have a dtc keep re-appearing and the Ista advises to update the ecu via Ista-P ver 3.59.2.

Other than being annoying that it keeps returning it would be an mot failure which is due in March so do need to resolve the issue.

I dont really understand why it requires an update, not had anything changed or altered other than scanning for codes, clearing codes, test procedures via Inpa and Ista.

2010 E90 318i n43

I do apologise in advance if I lack enough detail.