[xelasnave]

Make sure the scope is in line with your polar axis.
Tape you phone in place if you don't have a holder but make sure it does not move during the following...point the scope (and the mount actually) at where you think CSP is likely to be...take a photo say every minute or so for as long as you can but at least ten minutes...what you can do by looking at all the images is mark out the circles they are making ...the centre of those circles is the CSP...you then can adjust your mount accordingly...ideally you should be able to take a group of photos that has the centre of the circles in the centre of your photos.
Last night ( because I am trying to find the CSP thru trees) I set my had my pole master camera take a ten minute shot in sharpcap which showed exactly where CSP was and I was able to work out octans with one star hidden by a branch.
Anyways with that photo I adjusted the mount so the centre of the star circle was in the centre of the screen and then went into pole master to nail it perfect..I was amazed how close I was just by doing the ten minute exposure and adjusting using it.
But I did not notice the rest of the sky had clouded over so I did not get any imaging done...but polar is good to go maybe tonight hopefully.
Good luck.
Hope this helps.
Alex

You can use a long exposure on your camera ..better still...either just the camera or thru the scope a long exposure will show the arcs which you centre to get near perfect PA...the mount is off during this process.
Alex