Hello, I just purchased a used iPad 2 from someone who has not used it in a couple of years. This is my first Apple product and I am therefore ignorant in the world of Apple. My question... The iPad has presently ioS 6.1.3 and it is wanting to update to 9.2.1. Is there any way to be able to just update to ios 7. When I try to install Apps from the store most say I need to update to at least ios 7 or ios 8. Iwant to be able to at least install a few apps without bogging the iPad 2 down. I was warned that installing 9.2.1 would cripple the iPad being an older model. Thanks in advance.