# Zero Lipo software causes Failed to Authenticate error **URL:** \ **Category:** Raspberry Pi\ **Created:** [July 8, 2017, 5:56pm UTC](https://forums.pimoroni.com/t/zero-lipo-software-causes-failed-to-authenticate-error/5246 "2017-07-08T17:56:05Z")\ **Posts on this page:** 1\ **Showing post:** 55
**Author:** ![MisterMander](https://sea2.discourse-cdn.com/flex016/user_avatar/forums.pimoroni.com/mistermander/32/5457_2.png) [@MisterMander](https://forums.pimoroni.com/u/MisterMander)\ **Post date:** [September 13, 2018, 9:31am UTC](https://forums.pimoroni.com/t/zero-lipo-software-causes-failed-to-authenticate-error/5246/55 "2018-09-13T09:31:49Z")
Sorry to jump on this old thread! I’m having exactly the same problem described above. I’m using a Pi Zero W, Samsung 8gb card and have the shim soldered to the gpio. Only other thing I have connected is a Microsoft combination keyboard & mouse. I’ve reflashed several times but always get the Failure to Authenticate message if I try to power up with an official Raspberry Pi power supply. It boots straight to the desktop fine if I connect the lipo battery on its own. If I then plug in the power supply after it’s booted it still shuts down when the battery runs low (thought that was worth a go!). I can do bits & pieces just running off the battery but it has a habit of shutting down just as things are getting interesting! Is there a simple way for me to remove the code I installed from the one-line installer to see if that does anything? Thanks! --- _[View the full topic](https://forums.pimoroni.com/t/zero-lipo-software-causes-failed-to-authenticate-error/5246)._