Answers for "change url in iframe"

change iframe src

Do not use Inquisitive Iguana's answer! Notice the spelling of facebook in https://facobook.com. Visiting the webpage downloads malware onto your system

Message from my antivirus on my mac: "We've blocked the threat URL:Mal on http://dt.gnpe.com/ptmd from being downloaded."

update links inside iframe content from different domain

It isn't possible. The whole point of the Same Origin Policy is that you can't
access or manipulate content from another domain.