Installed update right-away on my mid-2010 MBP hires which experienced GPU panics about once a week or less often with 10.11.3. With 10.11.4 it got worse: more panics and some freezes as a bonus. This could be caused by the solder wearing out even more. But I doubt this.
Combo update took a while to install but it seems to work. The 'Service Battery' status message disappeared. That's one fix already. Too early to say the freezes & panics are something of the past. But at least the update does work and MBP feels snappier.
Combo update took a while to install but it seems to work. The 'Service Battery' status message disappeared. That's one fix already. Too early to say the freezes & panics are something of the past. But at least the update does work and MBP feels snappier.