OTG flashing instructions

instructions.md

The install isn't too bad as long as you have shell access and can work your way around the command line. Assuming you have BleemSync payload installed:

1. Download and place the new kernel image on a USB drive.
2. Plug the PSC to your computer and turn it on.
3. Plug in the USB drive to the PSC.
4. Open a telnet connection to the PSC.
5. Depending on whether you're booting a solution off the USB drive, you may need to mount it. If you don't see anything in /media, do this:

   systemctl stop usb_watch
   mount /dev/sda1 /media

6. Backup the original kernel image:

   cat /dev/disk/by-partlabel/BOOTIMG1 > /media/BOOTIMG1_ORIGINAL

7. Flash the new kernel image (note: this is different from honeylab's instructions to use fastboot; because the kernel is decompressed and loaded to memory at boot, it's not read from disk while it's running, and this saves you some trouble from having to crack open the device, install drivers and fastboot, and timing issues. You'll still need fastboot if you screw something up and have to restore the original kernel):

   cat /media/otg_sdp_disabled.img > /dev/disk/by-partlabel/BOOTIMG1

8. Modify /usr/bin/start_pman to semi-intelligently put the port in the right mode. Replace line 12-18 with

   if [ "$CHG_INFO" -eq "3" ]; then
     echo change to hostmode
     echo idle > /sys/devices/platform/mt_usb/swmode
     sleep 1
     echo host > /sys/devices/platform/mt_usb/swmode
     sleep 1
   fi

9. Unmount USB drive and reboot. If you're using a solution, hit the power button. Otherwise:

   cd
   umount /media
   reboot

It should boot the new kernel now. Note do not touch BOOTIMG2, that's for recovery boot and there's no good reason to mess with it.