Very faint belt in the SSTZ, glimpsed a couple times...I think. Very difficult.
Ganymede was just off the preceding limb. Spurred by reports of bands on Uranus and another thread on "stupid Magnification," I cranked mine to 480x (6mm TMB and 1.5x Barlow) to observe Ganymede.
After about 15 minutes, I was convinced I was gonna see all there was to see on Ganymede. A darker preceding limb, a touch north was pretty well evident. Enough to "log it." During that time, I kept seeing a brighter spot kind of "dancing" in and out in the south. It was persistent enough to be logged and sketched. Also, maybe, just maybe a tiny bright spot in the north. It got sketched.
Imagine my surprise when checking JPL sim. Image inset, pretty close. In fact, the inset is about as small as Ganymede appeared to be at the eyepiece. Not far off, anyway. I'd urge others to give Ganymede a shot, something can be seen. I succeeded last year, as well. Try it!