# Legacy Firmware Download for EM9191

**URL:** <https://forum.sierrawireless.com/t/legacy-firmware-download-for-em9191/30217>\
**Category:** Uncategorized\
**Created:** [July 13, 2023, 6:21pm UTC](https://forum.sierrawireless.com/t/legacy-firmware-download-for-em9191/30217 "2023-07-13T18:21:57Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![cheng\_hai](https://avatars.discourse-cdn.com/v4/letter/c/e480ec/32.png) [@cheng\_hai](https://forum.sierrawireless.com/u/cheng_hai)\
**Post date:** [July 13, 2023, 6:21pm UTC](https://forum.sierrawireless.com/t/legacy-firmware-download-for-em9191/30217/1 "2023-07-13T18:21:57Z")

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Hi community,

For some reason, I need to downgrade my EM9191’s FW to `01.07.19` from 03.10.07. However, there is no such legacy FW in the [resource page](https://source.sierrawireless.com/resources/airprime/software/em919x/em9-approved-fw-packages/#sthash.038DArg3.a7gFTf9Z.dpbs) .

Can anyone tell me where I can download this FW?

Thanks!

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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:** [July 14, 2023, 1:06am UTC](https://forum.sierrawireless.com/t/legacy-firmware-download-for-em9191/30217/2 "2023-07-14T01:06:52Z")

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you can see here:

> [@Upgrade of old EM9191 firmware and band N40 support](https://forum.sierrawireless.com/t/upgrade-of-old-em9191-firmware-and-band-n40-support/27231/2):
>
> I have a backup file in my PC: