Head to the Apple Developer website, and make a free account by clicking "Account" on the navbar or dropdown.

You'll need to agree to apple's terms and conditions to create an Apple Developer account.

Next, on your device, go to Settings > Privacy and Security > Developer Mode and enable it. Your device will restart.

You can get AltStore by going here, and unzip your '.zip' file.

You'll next need to open the unzipped folder and running "AltInstaller.msi". Proceed with the setup as usual. You may need to click the 'Windows Defender' icon to show the popup.

Next, click the windows key, and search for "AltServer". Run it. No menu will popup, but the application will start.

Open Apple Devices. Next, open your "Hidden Icons" on your taskbar. You will see a icon that resembles a star.

Next, Click on that icon, hover over "Install AltStore", and click on your device (see photo). You will be prompted to enter your apple ID (Don't worry, it's safe. I've done it many times). AltStore will be installed on your device.

Finally, go to Settings > General > VPN and Device Management > Developer App and trust AltStore. You may also have to do this when you get Pocket Poster.

On your device, download the latest release of Pocket Poster and open the AltStore app. Head over to the "My Apps" section and click the "+" icon. Select your Pocket Poster .ipa file.

If your phone is connected to your pc and AltServer is running, Pocket Poster will be Sideloaded.

Once you have completed the tutorial inside the app, open Nugget on your pc (see how to install Nugget on Windows) and navigate to the Settings tab. Click on "Pocket Poster Helper". Now, on your device, click on the gear icon and click "detect" under App Hash. This will enter your app hash, which is required (if detecting it doesn't work, type it in manually).

Now, you are free to import any .tendies file that you like! Remember to follow the popup's instructions, and if you get errors, refer to the Cowabunga Discord server.

There's muiltiple things that can cause this error. Such as a incorrect App Hash, error with PosterBoard, or an invalid .tendies file.

A very common issue is that you may have cleared collections inside of Nugget. To fix this, go to Settings > Language & Region and click "Add Language...". Chose another language. Then, switch back to your preferred language.

Make sure your app hash matches the one that you received from running the "Pocket Poster Helper" button in Nugget's settings.

If this is an error with PosterBoard, use the fallback shortcut by going to Pocket Poster's settings, and clicking "Download Fallback Shortcut". Run it, and try applying again.

If these fixes still don't work for you, check your .tendies file. It could be misconfigured. Try using it on your pc, or contacting the creator.

You can find wallpapers on cowabun.ga/wallpapers, in the PosterRestore Discord, or My wallpaper website.