Updating facebook from twitter
Also USB 3 ports may not work well with fastboot and can be the cause of this problem.After updating Gecko and Gaia to nightly with the v180 base image, there will be a mismatch between the fonts that Gecko and Gaia expects and what the base image provides (this has been fixed as of v188).
When using a Flame, you won't want to lose your phone's contacts and other data while upgrading to a new build (as explained earlier in this article).
Note that regular adb would not see the device — only fastboot sees it.
In this mode, you can use the flash script to install the last base image as explained above.
Before starting to do any of this, you should make sure you have run through the Initial setup information.
There is a lot of information in this article, so here we've included a quick start guide that takes you through the steps you need quickly to get your device updated.