Left it out in the rain

Hi @griffins54532

Even though you say it is working OK (although not with the WiFi board it seems) you may have to open up the Flipper and check if there's any sign of water damage, corrosion etc.

The impurities in the water causes corrosion and provides circuit paths for the electricity which were not in its operating design and could damage the components. The corrosion starts immediately and is ongoing until it is completely cleaned away

First do not try to charge or to turn it on again and then remove the battery as soon as possible to minimize any further damage.

Then you need to dis-assemble the rest of the device and clean all the affected parts using Isopropyl Alcohol 99%+ (available at electronics parts stores) to remove all traces of corrosion and water. If possible do not use "rubbing alcohol" as in some cases this is only 70% IPA or less, can contain additives which may leave conductive residues and is not as effective. If you do have to use it check the label to verify the amount of IPA. The higher the percentage of IPA the better

Here is a link that describes what happens. Electronics Water Damage

As always with electronics, especially surface mounted pcb be gentle when handling and especially when brushing away the corrosion. You do not want to remove any components from the board. Remove the shields that may be covering some components as the water may have got in under there. The ends of any flex cables and their connectors need to be cleaned as well

Hopefully after you have done all this it might possibly work correctly again.

Here is the ifixit Flipper Zero repair guide that may help.