Hi, I did the same. Thank you for confirming.I had all my physical pictures dated and signed in the back by my guarantor, so when they asked me to send it virtually via epost, what I did is scan both pictures front and back, so i scanned and made 1 pdf for each photo which contains the front and backside. and I also took one clear picture of my photo with my phone and added it as a separate jpeg document since the agent told me they might use it for the passport picture. That's how I added it and I received my passport 10 days later.