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Probably I did the biggest mistake in my synth life
I bought some time ago Jp8000. Spent a few weeks enjoying great Jp sound. Yesterday I decided that I will check ROM version and do some updates if necessary. I checked ROM version, it was 1.05 (138 i belive). I Found that the newest version (279) is available, so I start the procedure of updating (below)
After point 3) Press REC,
all data has been erased and system was waiting for Midi file. So I connected my Roland UM-ONE MK2 interface, launched DAW and played Midi file - But nothing happened, Jp was still waiting for MIDI file. I checked all connection a few times, I'm 99% sure that Midi IN port in broken and I have never checked Midi IN port before !
When I switch on the JP, the lights are on but no ROM loading as the ROM has been erased.
Please tell me that there still something that I can do to get back my JP ?
1) Connect the sequencer MIDI-OUT to the JP-8000 MIDI-IN.
2) Turn on the power of the JP-8000 while holding down the [LFO1 WAVEFORM],
[OSC1 WAVEFORM], [OSC2 SYNC] and [OSC2 WAVEFORM] buttons.
3) Press REC.
4) When 'Ready to update' appears on the screen, send the first file (_00001.mid)
from your sequencer.
5) When the file is completed, verify that the checksum is indicated as below.
Block1 ( chksum = 49F8 ) => filename : '_00001.mid'.
Block2 ( chksum = 12E3 ) => filename : '_00002.mid'.
Block3 ( chksum = A146 ) => filename : '_00003.mid'.
Block4 ( chksum = E6EB ) => filename : '_00004.mid'.
Block5 ( chksum = 5455 ) => filename : '_00005.mid'.
Block6 ( chksum = 672D ) => filename : '_00006.mid'.
Block7 ( chksum = C131 ) => filename : '_00007.mid'.
Block8 ( chksum = F294 ) => filename : '_00008.mid'.
If the value is different, press [EXIT] and repeat steps 4 and 5.
6) If the value is correct, press the [REC] button.
7) Load the files one at a time, in sequence _00002.mid to _00008.mid and repeat
steps 4-6.
8 ) One all the files have been loaded, 'Completed' will be indicated on the screen.
Turn off the power of the JP-8000.