# MC7421 Firmware Upgrade Failure

**URL:** <https://forum.sierrawireless.com/t/mc7421-firmware-upgrade-failure/31983>\
**Category:** MC/EM Series\
**Tags:** fw-upgrade\
**Created:** [April 3, 2024, 12:40am UTC](https://forum.sierrawireless.com/t/mc7421-firmware-upgrade-failure/31983 "2024-04-03T00:40:28Z")\
**Posts on this page:** 1\
**Showing post:** 4

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**Author:** ![jyijyi](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.sierrawireless.com/jyijyi/32/4766_2.png) [@jyijyi](https://forum.sierrawireless.com/u/jyijyi)\
**Post date:** [April 3, 2024, 3:07am UTC](https://forum.sierrawireless.com/t/mc7421-firmware-upgrade-failure/31983/4 "2024-04-03T03:07:32Z")

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See if this helps

> [@EM7565 problem after firmware update failure](https://forum.sierrawireless.com/t/em7565-problem-after-firmware-update-failure/16236/5):
>
> you need to use MBPL version upper than R27 to run the lite-fw-download to upgrade module in boot and hold mode sudo ./bin/fwdwl-litehostx86\_64 -c QMI -m 4 -d /dev/ttyUSB0 -f /home/jordan/Downloads/FW\_EM74x1/SWI9X50C\_01.14.03.00\_GENERIC\_002.036\_010/

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