Is RED eTap software or firmware open source? Can I get into the code and tweak it to make it work with 10-speed or change the shift speed at different points in the rear derailleur’s sweep? August 10, 2015 21:04 Updated No. It is a closed system. The RED eTap is not programmable. Related articles Can I set up the SRAM RED eTap 2x11 system to do sequential shifting? Will SRAM make periodic eTap 2x11 firmware updates? Can I customize the shifter paddle or blip operation? E.g. have the left paddle shift up or connect two blips to one shifter and have each blip shift in a different direction? Can I program the shift speed? Can I hold down the eTap 2x11 shift lever to do a rear multi-shift? Comments 0 comments Article is closed for comments.