To use the.syx files go to http://www.softsea.com/review/GT-10-Fx-FloorBoard.html where you can get an freeware  GT 10 fx floorboard editor.

atches for the Boss GT 10

Here are some patches for Jazz-Guitar and Strat. Because I like my  guitaramp, an Engl Screamer 50, many patches use the preamp of the  combo. Some use the preamp of  the GT 10 for the first  channel, the Engl preamp for the 2nd channel. Here you can find out how  to connect the GT10 to your amp:http://www.rolandmusik.de/downloads/pdfs/GT-10_Verkabelung.pdf

You can download the patches in 2 different formats: as GT 10 Librarian file or as .syx data.

To use the Librarian files you need the GT10 Librian, which you download at the Roland website: http://www.rolandmusik.de/ftp/pub/downloads/tecfiles/G_bis_O/GT_10_Librarian_PC_Ver100.zip

for Jazz guitar: JazzcomboPoly2,JazzcomboPoly3,JazzcomboPoly4slow, JazzcomboPoly, JazzEngl, Jazzclean-overdrive, JazzEnglchorus2, JazzEnglchorus, JazzEnglBlues, JazzEnglWarm, JazzEnglMellow, Jazzguitar, Jazzguitar tapdelay, JazzguitarTapdelay.

for Strat and other guitars: Osloreverb, reverb with pedalcontrol, Osloreverb2, ducked delay, Fenderjazzoverdrive, reversedelay, StratEnglcrunch, JazzStratComp, JazzStratCool, Analog delay, Custom Wah

Please pay attention: in all “Engl patches” and  some others too, the external loop is switched on to use the amp´s own preamp or an external pedal!

left:

a screenshot of the Gt 10 fx floorboard editor