LEXICON PCM 70 OS VERSION 2.0 EPROM UPGRADE UPDATE PCM70 EFFECT REVERB V2 ROM IC
LEXICON PCM 70. Which software version is my Lexicon PCM 70 running?. To check your current software version, simply turn on your PCM 70. If you have version 1.0 or version 3.01 you may want to consider upgrading.