Was known as JT54_Y61 GU IV 08CRD Wag ST
Phil makes a goods point here, when using PC/Laptop and changing your MAP settings (Absolute BOOST / PWM%) be mindful of where the cursor is (<>) as it is easy to drop down into the lower area (MAF settings or MAP limits) and inadvertently make an unwanted change - on "L plates".The Android app only allows to modify the turbo MAP at the moment, not the other parameters, which, in principle, don't need to be changed once set.
I would prefer to keep it that way as inexperienced guys could make mistakes when setting other parameters with their phone, and get rapidly lost ( talk to John...).
Good idea to carry a hard copy of a previous MB parameter settings when out on the road as it can be a handy reference when making changes.
BTW, I have never used a phone (Android app) to make changes to turbo MAP. Bought a dedicated laptop HP series 11 ($330 from Officeworks-Feb 21), small compact good bit of kit and take it with me for every drive.