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so i converted it byself:


you can download here the Firmware:

TR-909 v4 Firmware for the origional eprom type (276427C64)  (64K)

TR909-V4_for64k_eprom.hex

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here´s the EPR FILE (same content and can be used in the Tool Prony Prog)

TR909-V4.EPR


and for the 27256 27C256 (256K) eprom which is different

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