mark_nefedov wrote:
Yes and this makes experience inferior to every other hardware vendor. Especially when there is absolutely no technical reason for “why”. And the workaround is to buy an Android that will use the same SIM card with same cellular connection and magically work.
At no point did I indicate that you couldn't perform the update over a Cellular network - merely that you cannot perform a Baseband update over a Cellular connection while the iPad's Cellular hardware while it is active.
When connecting using a Cellular hotspot, your iPad is making its internet connection via WiFi (therefore allowing the Cellular Baseband firmware to be updated). The difference in network connection is perhaps subtle, but important to understand.