Short answer up front - Wi-Fi Signal Strength is not the issue ... I have my dedicated IOT Router / Wireless Access Point no more than 3 feet away from my PRO 780 (signal shows as "Excellent") and I am still stuck on Firmware 02.00.01 / Config 03.007 ... I have left the Grill powered on for 7+ days straight, and power cycled it numerous times to no avail ... Traeger Support will openly admit that the WiFIRE Controller communicates to the Traeger Cloud at Power On and that is when an update check is done ... if the Traeger Cloud recognizes that your WiFIRE Controller is in need of an update, it should begin PUSHing the update down (Downloading Files) within a few minutes ... if that is not happening, leaving the grill on indefinitely is not going to help (due to the update check occurring as part of the WiFIRE Controllers "start up" process after it is turned on ...) ...
What Model Grill and what version of Firmware / Config do you have currently installed?
The answer to "why" is currently a mystery, as Traeger has yet to provide any official explanation ... the Grill UUID is how the Traeger Cloud back-end identifies and tracks the specific WiFIRE Controller in each grill ... the fact that some WiFIRE Controllers are being recognized as needing a Firmware Update and/or a Config Update, while others are not, points to data integrity issues with the Grill UUID values stored in the Traeger Cloud ... I suspect they need to do some "data scrubbing" along with another set of updates to get this working again for impacted WiFIRE Controllers ... a May Update is PENDING that is supposed to resolve this issue ...
The Firmware version applies to all WiFIRE Controllers, regardless of the Grill Model ...
The Config version is Grill Model Specific ... this is where a grill receives feature updates such as the ability to select 500 degrees ...
At present, it seems like there are three versions of Firmware floating around ...
2.00.01 - January 2020 Update Release ... this update release has created some havoc ... it seems to have put the WiFIRE Controller into a Factory Reset for some Grills, and people are struggling to get the WiFIRE Controller reconnected to their Home Wi-Fi Network ... it can be done, but it takes following a somewhat structured troubleshooting approach, and from what I am seeing on the various Traeger-related Facebook Groups, a subset of people want to complain and randomly try things without going through a process to resolve the issue ... and Traeger Support is not much help in most instances ... this release is also where many of us ended up in "update jail" ... more about that below ... on the PLUS side, a few people have this version of Firmware installed, but also were able to get a updated Config version, which is allowing them to go up to 500 degrees ... the "whys" behind all of this point to some technology challenges related to People / Process / Technology within Traeger itself - they are going through the growing pains of managing IOT-devices as a Technology company ...
2.01.00 - March 2020 Update Release ... those lucky enough to receive this update release seem to also be getting the necessary Config data update applied to support 500 degrees ... still see some variances in the Config version installed when receiving this update, but very few people seem to have this version of Firmware, and an older Config version, which would be preventing them from going up to 500 degrees ... if the WiFIRE Controller is updating the Firmware, it should also be updating the Config version ... and that fact that it isn't 100% of the time again points to issues with the Grill UUID and the Traeger Cloud back-end ...
... and finally, over the past few days, people are reporting 2.01.01 being installed - this is at present an undocumented release ...
Here is what I have been sharing via various Traeger-related Facebook Groups over the past 7-10 days ... it is up-to-date with the exception of the undocumented 2.01.01 Firmware update ...
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If your WiFIRE/Grill is not updating to support 500 degrees ... Your WiFIRE/Grill is in "update jail" ... This covers the "issue":
Firmware for all Traeger Grills is currently 2.01.0 - that is likely to change in the month of May as another update is forthcoming ... The ability to support 500 degrees is tied to the Config data file version for each Grill, and that value is Grill Model specific - see the following:
https://www.traegergrills.com/status
04.016 is the current Config data version for the PRO 575
03.010 is the current Config data version for the PRO 780
08.005 is the current Config data version for the Timberline 850
07.006 is the current Config data version for the Timberline 1300
06.009 is the current Config data version for the Ironwood 650
05.009 is the current Config data version for the Ironwood 885
10.005 is the current Config data version for the Silverton 620
09.005 is the current Config data version for the Silverton 810
11.005 is the current Config data version for the Century 885
The pending May Update SHOULD address the KNOWN ISSUE for those Grill owners who are unable to get WiFIRE to update to the latest Firmware / Config versions - so you may need to be patient and wait for that release to go live ... and at present, updates can only be PUSHed down from the Traeger Cloud, so you cannot invoke it manually ... at some point, the Traeger App will support PULL updates, so you can control if/when the update(s) are installed ...