For now, SafePal only supports firmware upgrades from PC, instead of the cellphone. Users will need to upgrade SafePal S1 firmware on the laptop or computers.
The reason for this is that the operational systems and ports used by mobile phones on the market are very diversified and differentiated. Though from a technical point of view, it indeed is feasible to conduct a firmware upgrade by using a mobile phone, the compatibility is difficult to balance and achieve. Till this point, firmware upgrade via PC is the most compatible and easiest way for most users.