Well, what I wrote is entirely true,
but you just had luck to have "basic" revision, otherwise it would not end that happy
(but with dead or no display - or no network phone)
Let's make it clear - It's not about PID (CU-REF), but hardware revisions,
X/D/N models etc CAN be cross-flashed.
However, PID : 2038X-3xALE71 is for Balkans, but don't have Polish lang.
(it have English, Deutsch, Slovenian, Croatian and Serbian.)
But ... There is Retail Poland rom , PID : 2038X-3xALPL1
(it have English, French, Russian, Deutsch and Poland lang.)
Download:
2038X_ALPL_V1.5_181130
Test and post results.
b.r.
Alex