so, you hear a short tune when you connect the BankStick - this means that the EEPROM has been regognized.
even if i upload the preset bank with jsynth nothing happens
…what should happen? Did you select the Patches via Program Change? Note that Patch #1 is the internal patch stored in EEPROM, patch #2-128 are the external patches stored in BankStick.
Your BankStick has not been formatted yet, the firmware tries to do this - a “beep” can be heared after every formatted patch, so you have to wait for 128 “beeps” until the BankStick is ready for use. It takes about 3 minutes.
During the formatting procedure all other SID functions are disabled. When you interrupt the formatting (by removing the BankStick or Power-Off), the firmware will try it again so long until it has been completed.