Bottom-Line-Up-Front (BLUF) To update a Toyvao children’s talking/reading pen firmware: charge the pen, connect it to a PC via USB‑C,…

BLUF: To set up a children’s OID reading pen for the first time: unbox, fully charge (8–12 hours battery life…

BLUF If the pen and the book use the same OID (optical ID) encoding and the pen’s firmware supports that…