I finally decided to try UT on my Sandstone A0001 OPO this week. First, I attempted this with my Ubuntu box, but could never get past the error message:
debug: adb shell: echo 1 debug: Running platform tool exec cmd adb -P 5038 shell echo 1 debug: Error: Command failed: adb -P 5038 shell echo 1 error: device unauthorized. This adbd's $ADB_VENDOR_KEYS is not set; try 'adb kill-server' if that seems wrong. Otherwise check for a confirmation dialog on your device. debug: adb shell: echo 1 debug: Running platform tool exec cmd adb -P 5038 shell echo 1 at ChildProcess.exithandler (child_process.js:217:12) at emitTwo (events.js:106:13) at ChildProcess.emit (events.js:194:7) at maybeClose (internal/child_process.js:899:16) at Socket.<anonymous> (internal/child_process.js:342:11) at emitOne (events.js:96:13) at Socket.emit (events.js:191:7) at Pipe._handle.close [as _onclose] (net.js:510:12) debug: debug: adb shell: getprop ro.product.device debug: Running platform tool exec cmd adb -P 5038 shell getprop ro.product.device debug: debug: getprop: A0001 debug: adb shell: cat /etc/system-image/channel.ini debug: Running platform tool exec cmd adb -P 5038 shell cat /etc/system-image/channel.ini debug:
fastboot installed and this thread (https://forums.ubports.com/topic/897/traing-to-install-in-oneplus-one/2) didn't help, either. And then, I couldn't get the phone to boot past the Powered by Android screen.
So, now I'm trying to use my Windows 10 machine and I put CM11 on again via the OnePlus Recovery Tool, as seen in this vid https://www.youtube.com/watch?v=Ste5tvCDMWE. I then unlocked the bootloader, put on TWRP, and rooted just like this site (https://forums.oneplus.com/threads/oneplus-one-how-to-unlock-bootloader-install-custom-recovery-and-root.64487/) so that I now have, at least, a fresh install of Android. I grabbed the Windows UBPorts Installer from https://docs.ubports.com/en/latest/userguide/install.html and started the process. The installer doesn't recognize my phone automatically, but I can add it manually and the installer at least flashes while my OPO is in fastboot mode and reboots to recovery mode. However, just like this fella (https://forums.ubports.com/topic/2148/installing-ubuntu-touch-on-oneplus-one), I can't get the installer to recognize that my phone has rebooted to recovery mode and so there it sits for... hours maybe?
Should I be updating to CM13 or CM15 before installing UT? Or, should I install another OS on my CM11 so that I can then move to UT? Have I given enough info? Can someone provide some help? Maybe I just haven't found that one page to explain the thing I'm missing.