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OZ version

Downgrade Method

Notes

5.0

Index U P D

None

4.7.1

Index U P D

The screen may occasionally stay off after the write to flash and the Z88 may not reset automatically.
To If that happens, leave for 5 minutes to be sure it has completed leave for 5 minutes, then reset manually.

< 4.7.1

RUN"ROMUPDATE.BAS" from BASIC

Copy both romupdate.bas and romupdate.crc to RAM.
The screen will corrupt as the flash process begins. One row will blink. This is normal. Wait until complete.

image-20240520-225550.png

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