If your flipper is having issues, such as the common battery issue (only works when plugged in), here are some guides to assist. [iFixIt Disassembly Guide](https://www.ifixit.com/Guide/Flipper+Zero+Disassembly/151331). Great steps, pictures, and tool recommendations. [Video teardown of the Flipper](https://www.youtube.com/watch?v=38pHe7M4vl8). Easy to follow and good visuals. [Official self repair guide (PDF)](https://cdn.flipperzero.one/self-repair-guide.pdf). Geared towards the battery issue. Issues with stripped screws appears to be common. Be careful and use a quality screwdriver and/or bits!
If you need to replace a screw, [here are the dimentions](https://user-images.githubusercontent.com/57457139/174870632-501c9aad-ded6-46b5-8618-ba4aa8efa1e4.png) of them for replacement.