"Version 1.90 of the Accelerator firmware has been released!
1.) FX chains can be stored independent from sounds
2.) Complete rebuilt MIDI engine
3.) Dump functions for single programs, performances, fx-programs and complete banks.
4.) Dump receive function with selectable target programs
5.) All Notes Off and controller reset function on mastervolume knob button
6.) New sound select function allows for up/down switching through the entire programs memory
7.) Bus settings now get stored in program memories
8.) Received NRPN MIDI messages show up as overlay parameter receive messages.
9.) Some other bug fixes and cosmetic issues.
I produced two youtube videos explaining the update procedure (PC and MAC versions). The update includes a new bootloader version as well. Like described in the videos - you need to install the bootloader first and the firmware afterwards.
The update can be downloaded from the download section:
http://www.radikaltechnologies.com/accelerator_downloads.html"
via
Jörg Schaaf on Facebook
ACCELERATOR Update procedure MAC OSX
Published on May 26, 2014
"This video shows in three steps:
1.) Starting the Accelerator in Bootloader mode
2.) Updating the boot loader
3.) Updating the firmware.
Not all updates involve a boot loader update. Just skip step 2 if no boot loader update is necessary. But please always do a boot loader update if your ACCs version is below the latest published version. The firmware has been tested with the latest boot loader version!"
Accelerator Firmware Update procedure for Windows PCs
"Im uploading a video of the issues with this Quadra ,, and also on my Youtube channel you will see 8 videos of when i brought this back to life , all the work i put in , it used to belong to New Order , but have no hard evidence of this .. well to be honest , it seems every other day i have a new issue with her , and im being realy honest , ive give up , this needs a pro attention , not a novice like me , watch my videos and you will see how much ive put into this Quadra , brand new sliders x19 cost me a bomb alone , at least 40 chips and 105 capacitors .. believe me it pains me to sell her , but im at my wits end .. im just uploading vid so will link it later , not enough space here to list .. all i can say is membrane switches are not working at all now its stuck on strings ,, i can get bass , poly and lead on , but you have to lift lid and cheat it into going onto other sections which is obviously no good"
"beautiful analog strings very sharp hapsichord clavinett and anaolg piano sounds 
"Sequential Circuits Prophet 5 Rev. 2- Increasingly Rare Vintage Analog Polyphonic Synthesizer.
