# Digi One SP won't connect after firmware upgrade.

**URL:** <https://forums.digi.com/t/digi-one-sp-wont-connect-after-firmware-upgrade/22074>\
**Category:** Other & Legacy Products\
**Tags:** digi, one, sp\
**Created:** [December 22, 2020, 3:57pm UTC](https://forums.digi.com/t/digi-one-sp-wont-connect-after-firmware-upgrade/22074 "2020-12-22T15:57:09Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Wagner\_Alves](https://avatars.discourse-cdn.com/v4/letter/w/82dd89/32.png) [@Wagner\_Alves](https://forums.digi.com/u/Wagner_Alves)\
**Post date:** [December 22, 2020, 3:57pm UTC](https://forums.digi.com/t/digi-one-sp-wont-connect-after-firmware-upgrade/22074/1 "2020-12-22T15:57:09Z")

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I upgraded the firmware on one of my One SPs without upgrading the post first and now when I power up the unit the power led flashes four times then goes off and I cannot connect through either port. Resetting the unit results in the usual 1-5-1 blink pattern but upon resealing the reset switch the power led flashes four times and then goes off. Does anyone have any suggestions for recovering this unit? I have tried the recovery method when the blink patter is 1-9-1 and I get no response.