Understood. Unfortunately the tricks ive seen with ios 8 , require the phone to be jailbroken prior to implementing the hacks..
The only other option would be to run photo recovery software.. Such as this http://recoverdeletedphotosfromiphone.aolor.com/#method3
Unfortunately, none of the software I know of works on the newer iphone models.. Some will say they do, but they arent actually recovering deleted photos from the phone.. They recover them from icloud backups or itunes backups.
We already checked icloud so you know whats there. And since you said this phone does not get connected to any computers on a regular basis.. Or at any time within the past several months.. Then, we dont have an itunes backup to work from.
Your only option at this point is to find a computer that the phone has been connected to. Since the photos you want are old..
Then even if the phone was connected to a computer 3-6 months back. It would have made an itunes backup at that time, which would contain all your photos from that point, going back. This is the last option we are down to as to recovering the older photos.
As far as removing the passcode, that can be done but understand once we restore the phone, the only photos or data you will be able to recover is what is showing in icloud.
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