Had problems changing emus, but think I sussed it. x40 very quiet, no 'Turn off Voice guidance' and I couldn't find how to get the free RAM msg. Also my screen seemed dimmer than with 9.026 (always max for "Day" and 50% for "Night" with "reduce" brightness when dark".
Where did you get 9.004 from? I feel more comfortable patching than using an SE version - which may be why I don't so much free RAM!
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