Thanks Fanoush! Now booting from SD with new version. Here's how I did it, in case it helps others: I booted from flash. Then did SSU update, which worked fine. Then I used fanoush's initfs flasher. (Follow instructions in this order: 4, 5, 9, 10; you do not need to enter "mv bootmenu.conf.n8x0.example bootmenu.conf" at step 5.) Upon reboot, I had my bootmenu, and there was no option or need to run SSU while booting from SD. I will now refrain from rotating to portrait mode until emjayes updates sliderotate. I sure hate to get those double panes!