Here is an archive of some Everdrive 64 wallpapers, in both 640 x 480, and 320 x 240 resolutions.
Downlod the archive from:
https://mega.nz/file/eUk0gSiK#m_E5nbBDT0JsJ5N11Xzp48tahtJiESppKG0RksNFbkMEdit: The archive in the above link now contains both .JPG and .BMP files, for X7 users.
These are the wallpapers (don't click on these to download them, click on the mega.nz link, above.

Also, some X7 wallpapers are available from the post at:
http://krikzz.com/forum/index.php?topic=9671.msg73197#msg73197To create your own wallpaper, use the free program called Easy Graphic Converter, from
http://www.etrusoft.com/graphic-converter/index.htmas for some reason, some graphic converters don't create files that the Everdrive 64 can use.
Use this program to convert a photo or picture that you like to a resolution of either 640 x 480, or 320 x 240. The resolution you need depends on your Everdrive 64 version; v2.0 and v2.5 Everdrives can use either 640 x 480 or 320 x 240, so you may as well use 640 x 480, as it will look better. But the X7 Everdrive 64 and maybe the v3 ( I don't know) can only use 320 x 240, at least until Krikzz updates the OS software to support a higher resolution, so you will have to go with 320 x 240.
Whichever resolution you use, the file extension MUST be .bmp (i.e. the file MUST be a bitmap graphics file), and it MUST be 16 bit. Use Easy Graphic Converter from the link I give above, and as long as you use the right resolution