How to upgrade Booms in TFT

Booms in Teamfight Tactics were once exclusive to battle pass rewards. Riot overhauled the cosmetic rewards starting with Set 10, leaving many players wondering how to upgrade Booms.

The TFT Set 12 battle pass includes several Booms, locked for free-to-play players. For those like myself who used to collect three or more Booms from battle passes, we have a collection featuring options to upgrade them. But nothing seems to work. After reaching out to Riot Games, here’s what I found out about upgrading TFT Booms.

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