If you see a file labeled "Sonic Mania PPSSPP," it is almost certainly fake , a virus , or a misleading clickbait file. Downloading these can harm your Android device.
While not an official ISO, a dedicated community project has ported a version of Sonic Mania to the PSP using a decompilation process. sonic mania ppsspp isoroms android download link
You must provide your own Data.rsdk file (extracted from the official PC version of Sonic Mania ). Folder Setup: If you see a file labeled "Sonic Mania
Be cautious when downloading ROMs from third-party websites, as they may contain malware or viruses. " it is almost certainly fake