Great. For next time, you can also use this even easier process - [Teracube 2e] Instructions to Install Factory Software and to Reset
Need to get in contact for a replacement as trying to re-flash bricked my unit. ugh
support@myteracube.com if you have not found it already.
Just let them know what is up and the support team will get you taken care of 
I’ll ask the team about the viability of this.
Thanks for surfacing it.
Are there any reliable instructions for Linux users? I have a Ubuntu and Debian system.
Not really, unfortunately.
SPFlash is closed-source and not packaged for distros by MediaTek, so running their tarball binary is iffy, depending upon what system lib versions you have.
I boot into a Win2Go USB currently.
Okay so if you run into any software issues that formatting the phone can’t solve, you’d have to get the phone replaced then.
Please do. The must be more than 2 Linux users out there.
Thanks for the tip. I have a version of Windows running in a VM.