Первый аппарат был Ericsson 388.
Как помница этим
"Ericsson UnLocing software v.2.01f(c)M.Kozielki 1998."

вот еще кто помнит
Ericsson 1018:
Read eeprom and see 1F14h.
If you have value 00, change to 02.
If have 02, change to 00.
A1018 have 2 types LCD display.
1F14h stored display type


Ericsson T10s
If you change display on T10:
value in EEPROM at address 08E9h to 00,01 or 02.

Ericsson T28s
For change LCD type in T28s:
change at address 1571h value from 00 to 02.