Use a paperclip or SIM ejector tool to press and hold the internal button for while the device is powered on.
Because Jio does not release standalone firmware binaries online, your best, safest recourse is to take the hardware to a physical or an authorized service center. The service team can connect the hardware directly to their localized technician software interface and securely flash the clean Amtel JMR1140 R12.07 firmware profile back onto the device storage. amteljmr1140r1207 firmware download full
: Enter administrator into both the user ID input box and password input box. Use a paperclip or SIM ejector tool to