Forum to discuss all matters relating to the MPC1000 and MPC2500 operating systems created by 'JJ' (all versions).
By d1anonly Thu Jun 12, 2008 1:40 am
I just downloaded the JJOS to my mpc1 card and i turnd it off held the window button then the Rec button the mpc says.....new OS not Found will load in 5sec...what iam i doing wrong
By d1anonly Thu Jun 12, 2008 2:00 am
Im trying the free os first then ill update the other ones but I cant get the first one to work .... No suggestions?
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By Mr modnaR Thu Jun 12, 2008 9:51 pm
which os are you trying to install, and what os are upgrading from? if it's the os2, and you haven't bought os1, then it will not show up.
By tosh79 Thu Jun 12, 2008 11:01 pm
Is the file named "mpc1000_jv308.bin" in root of that mpc1 card?
By d1anonly Fri Jun 13, 2008 12:23 am
Yes it is its the first OS ive ever installed ////////I went to the MPC Akai pro and downloaded their new OS to see if it was JJ file I was having a problem with but no the new OS from AKAi web site wont work either ....When i hold the window button down it does say it is checkin the Disk ... but it says no "A New OS wasnt found will start with currnt os in 5 sec" then it start up normally
By d1anonly Fri Jun 13, 2008 12:27 am
I should also say this is a brand new mpc just bought it on monday.. could something be wrong with it .. or is something im doing...
By dtaa pla muk Fri Jun 13, 2008 2:58 am
yo, i know you've sent me a couple pm's, and i am sorry i haven't yet responded
you've caught me at a very, very busy time. i'll catch up when i can. in the meantime, there are plenty of folks who know their sh!t right here. best of luck, i hope to catch up sooner than later.
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By stan steez Fri Jun 13, 2008 11:36 am
Compare the filesize of the .bin on your CF card, with the one on JJ's homepage - maybe the Download didn't finish at 100%, so the file is corrputed... if it's not, try:

- formatting / using another CF Card
- resetting the MPC to default settings. (Hold ERASE befor switching it on)

That's all I know for now. Which AKAI OS version are you currently using?
By d1anonly Fri Jun 13, 2008 4:02 pm
I just bought it Im currntly using the oS that came with it originally....The file size is identical....to the one on the web page the disk s formated right ...if i go to the load screen then the disk ..select to view all files the file is in there and the size is correct... I have done nothing to the MPC i got it 5 days ago at the guitar center brand new...
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By thedvs01 Fri Jun 13, 2008 8:19 pm
stan steez wrote:- formatting / using another CF Card
- resetting the MPC to default settings. (Hold ERASE befor switching it on)


this is what I was going to suggest as well, re-formatting and re-downloading the OS file foremost.

also, it might be a long shot and is probably not going to help, but try disconnecting the USB cable

(by the way, is it necessary to hold Window *and* Record? I thought all you had to hold was the Window key while booting up)