It means version is not unlocked at all!
nter>
<printer name="Stylus L1800" driver="escp2-L1800" manufacturer="Epson" model="80">
<parameter type="float" name="Gamma">0.470</parameter>
<parameter type="float" name="Density">1.0</parameter>
</printer>
L1800 is supported since version 9.0