I bought a Thomson Lyra PDP 2225 (Eu version) which equals to the RCA RD 1080 (US version) but the US version hasn't got the volume limit. There's no different firmware for the Us-v or the Eu-v, the firmware automattically detects the version of the player. What you need to do is removing the volume limit from the firmware (attached). Money is more important than time.
## Deliverables
The volume limit should disappear, the other functions need to stay.
## Platform
it needs to work on the lyra pdp 2225. I can test it.