Ista P 371 |top| Download Link -

But here’s the catch: Let’s clear up the confusion and point you to the right (legal) source.

Use a Battery Stabilizer: Never program a BMW using ISTA-P without a dedicated 70A+ battery stabilizer (not a standard charger). If voltage drops below 13.0V, the programming session will fail, potentially damaging the module. ista p 371 download link