Nighthawk M1 rebooting randomly

After a month+ of stability, I experienced so many constant reboots this week on my M1 unit that it was unusable. I video taped five instances + showed a local AT&T Store manager in person.  This occurs regardless how it was powered - only with the stock battery, plugged into power (with the battery in) or plugged into power (with the battery removed).  I have 2.4-only wifi mode set, and I have wifi transmitting at the lowest power setting.

Here is a brief description on how the reboots have been ocurring:

1. Heavy data use (can simply replicate by running 2 - 5 consecutive speed tests)

2. Device reboots

1. and 2. repeats from 3 - 6 times, and most often, during last reboot, the device refuses to power on.  The only way to power on the device is pulling the battery then putting it back in.

Also, occasionally after a reboot, the cellular speeds decreases drastically to under 1Mbps, when normal speeds range from 8 - 30+ Mbps)

During the past month, I was using the M1 either in hilly locations or inside heavily insulated buildings both locations did not have strong cellular signals and my M1 used Band 12 (700Mhz) exclusively.  This past week, I started using the device outdoors in flat areas where cellular signal was pretty strong - each time I monitored the reboots, my M1 was usig B2 (1900Mhz) or B30 (2300Mhz).

Which this knowledge, I can now reliably replicate a stable situation as well as an unstable (constant reboot) situation.

Good news is I was able to file a warranty return with AT&T.

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winger13 wrote:

After a month+ of stability, I experienced so many constant reboots this week on my M1 unit that it was unusable. I video taped five instances + showed a local AT&T Store manager in person.  This occurs regardless how it was powered - only with the stock battery, plugged into power (with the battery in) or plugged into power (with the battery removed).  I have 2.4-only wifi mode set, and I have wifi transmitting at the lowest power setting.

 

Here is a brief description on how the reboots have been ocurring:

1. Heavy data use (can simply replicate by running 2 - 5 consecutive speed tests)

2. Device reboots

 

1. and 2. repeats from 3 - 6 times, and most often, during last reboot, the device refuses to power on.  The only way to power on the device is pulling the battery then putting it back in.

 

Also, occasionally after a reboot, the cellular speeds decreases drastically to under 1Mbps, when normal speeds range from 8 - 30+ Mbps)

 

During the past month, I was using the M1 either in hilly locations or inside heavily insulated buildings both locations did not have strong cellular signals and my M1 used Band 12 (700Mhz) exclusively.  This past week, I started using the device outdoors in flat areas where cellular signal was pretty strong - each time I monitored the reboots, my M1 was usig B2 (1900Mhz) or B30 (2300Mhz).

 

Which this knowledge, I can now reliably replicate a stable situation as well as an unstable (constant reboot) situation.

 

Good news is I was able to file a warranty return with AT&T.

 

 

 

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Just wanted to provide a follow up in case this can help someone.

I received a warranty replacement today and was able to perform a series of speed tests in an area with strong Band 30.  No reboots.   I will run the same tests in a few days in an area with Band 2 and will report back.  But, this is promising, so far.

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winger13 wrote:

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winger13 wrote:

After a month+ of stability, I experienced so many constant reboots this week on my M1 unit that it was unusable. I video taped five instances + showed a local AT&T Store manager in person.  This occurs regardless how it was powered - only with the stock battery, plugged into power (with the battery in) or plugged into power (with the battery removed).  I have 2.4-only wifi mode set, and I have wifi transmitting at the lowest power setting.

 

Here is a brief description on how the reboots have been ocurring:

1. Heavy data use (can simply replicate by running 2 - 5 consecutive speed tests)

2. Device reboots

 

1. and 2. repeats from 3 - 6 times, and most often, during last reboot, the device refuses to power on.  The only way to power on the device is pulling the battery then putting it back in.

 

Also, occasionally after a reboot, the cellular speeds decreases drastically to under 1Mbps, when normal speeds range from 8 - 30+ Mbps)

 

During the past month, I was using the M1 either in hilly locations or inside heavily insulated buildings both locations did not have strong cellular signals and my M1 used Band 12 (700Mhz) exclusively.  This past week, I started using the device outdoors in flat areas where cellular signal was pretty strong - each time I monitored the reboots, my M1 was usig B2 (1900Mhz) or B30 (2300Mhz).

 

Which this knowledge, I can now reliably replicate a stable situation as well as an unstable (constant reboot) situation.

 

Good news is I was able to file a warranty return with AT&T.

 

 

 

---

Just wanted to provide a follow up in case this can help someone.

 

I received a warranty replacement today and was able to perform a series of speed tests in an area with strong Band 30.  No reboots.   I will run the same tests in a few days in an area with Band 2 and will report back.  But, this is promising, so far.

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OK, I was able to hit an area today, earlier than expected, where Band 2 is dominant.  I ran an extensive set of speedtests (d/l and u/l speeds were in the 15-30 range) and the replacement device did NOT reboot.

I think I am good to go with this one.

Hi winger13,

Thank you so much for the update. I am glad your issue has been resolved. :]

- Jason N