In Blast, export your summary report for the month as a CSV and save it to your phone. That is the file this takes — not a screenshot and not a swing-by-swing export. (That part happens in Blast’s own app, so there is no picture of it here.)
2
Open the Blast screen
Tap My Stats on your home screen, then Upload my swings under your swing numbers. That opens the Blast screen, with Upload my swings at the top of it, above whatever is already on file.
3
Pick the month
It opens on the current month. Change it if the file is for an earlier one — your numbers are stored a month at a time, so this is what decides where they land.
4
Choose the file and tap Upload
It reads the file on your phone, finds your row in it, and saves your numbers. When it works it tells you your bat speed and refreshes the screen underneath.
5
If it says it could not find your swings
That means the file is not the Blast summary export, or it is a team file with several hitters in it and none of the names match yours. It refuses rather than guessing, which is deliberate — the wrong hitter’s numbers on your page would be worse than none. A file with only you in it is always taken.
6
What it is for
Uploading keeps your monthly numbers current between cage sessions, so the bat speed, rotational acceleration and on-plane efficiency on your page are yours and recent rather than whatever was last measured here.
