Believe you just need to download "animate" on Cydia and then go shopping in the "Addons (BootLogo)" section.
Unfortunately, animate works with 4.2.1 untethered provided in Greenpois0n and redsn0w versions not using Jailbreak Monte only. However, it states that this will change eventually.
Strange, I had thought the Dev Team said they packaged the latest Pwnage Tool with the same exploit Greenpois0n uses, I had hoped to use my custom boot logos. I don't even need them animated, just want to use them!
im currently on 4.1 using limera1n, can i not have a animated boot logo? will animate from cydia not work?