The firmware version Amtel JMR1140 R12.07 is specific to the JioFi 4 (JMR1140) portable hotspot. CVE Details no official direct download link
If you are experiencing slow speeds or connection drops, try a factory reset by pressing the reset button inside the battery compartment before attempting a firmware change. How To Update Router Firmware amteljmr1140r1207 firmware download full
Always attempt to update directly through the device's administrative panel first. If you must download the file, ensure the source is a reputable community forum or the official manufacturer site to avoid bricking your hardware or compromising your security. The firmware version Amtel JMR1140 R12