If I try to use following Statement:

UPDATE TEST_TABLE SET TEXT = UPPER('Gerät') WHERE ID = 5

The Updated cell contains now "GERäT" but it should be "GERÄT".
My table is set by default to ISO8859_1 DE_DE, but i also tried
WIN1250 WIN1250.
I use Firebird 2.1.0.15999

Regards Max