This might be my final contribution to this thread's FW collection. 7 more of the requested FWs.
Here comes IXUS 55 100D (part 2)
That's all folks.
19 FWs total, not too bad I had not expected to have matches on so many cameras.
My IXUS 50 has a sensor defect so I'm getting a replacement. With luck that will have the right FW to fill the 20. We'll see.