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Sprint Home Wifi Router [Wi-Fi Connect][Asus AC66u]

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On 12/28/2017 at 8:41 PM, lilotimz said:

Get rid of the old non updated firmware and load up the standard Asus or Asus Merlin.

I have been trying to read up on finally updating my Sprint wifi connect router at the link below.

https://www.snbforums.com/threads/how-to-sprint-ac-rt66u-to-stock-asus-firmware.25261/

I am a bit confused as to which CFE file version to update.  I see in the zip file that there is a "Zentel_1.30_EU_To_US.bin" which I guess the file you are  suppose to update your MAC address to rename as "newcfe.bin".  Is there a dumb down tutorial that shows how to properly update the router to stock firmware?

I also read that you should flash the 376.3626 firmware first to expand the rootfs partition from 32M to 64M after updating the CFE file before flashing any future firmware versions.

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1 hour ago, ericdabbs said:

I have been trying to read up on finally updating my Sprint wifi connect router at the link below.

https://www.snbforums.com/threads/how-to-sprint-ac-rt66u-to-stock-asus-firmware.25261/

I am a bit confused as to which CFE file version to update.  I see in the zip file that there is a "Zentel_1.30_EU_To_US.bin" which I guess the file you are  suppose to update your MAC address to rename as "newcfe.bin".  Is there a dumb down tutorial that shows how to properly update the router to stock firmware?

I also read that you should flash the 376.3626 firmware first to expand the rootfs partition from 32M to 64M after updating the CFE file before flashing any future firmware versions.

I followed that exact guide and got mine flashed successfully. What changed since then was Asus (and other manufacturers) released new firmware that prevented firmware downgrades past a certain point due to abuses in transmit powers being adjusted and etc. So i would flash something before the 378 range first. 

I've relegated my flashed AC66 running Merlin 380 version to my relatives place as a primary AIO router for their 30 / 30 fiber connection. It had a few connectivity issues initially but a couple of complete resets has made it stable. 
 

I had to mess with my friends Sprint AC66 back in september  since its IPSEC "prioritization" would mess with the Airave 3 / S1000 femto cell IPSEC tunnel back to Sprints network (~300 kbps limit up / down). I would not be surprised if they'll drop the router soon enough too as it's redundant with the Airave 3 / S1000 being able to offer AC WiFi + LTE &/or CDMA without the ipsec tunnel conflict. 

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21 hours ago, lilotimz said:

I followed that exact guide and got mine flashed successfully. What changed since then was Asus (and other manufacturers) released new firmware that prevented firmware downgrades past a certain point due to abuses in transmit powers being adjusted and etc. So i would flash something before the 378 range first. 

I've relegated my flashed AC66 running Merlin 380 version to my relatives place as a primary AIO router for their 30 / 30 fiber connection. It had a few connectivity issues initially but a couple of complete resets has made it stable. 
 

I had to mess with my friends Sprint AC66 back in september  since its IPSEC "prioritization" would mess with the Airave 3 / S1000 femto cell IPSEC tunnel back to Sprints network (~300 kbps limit up / down). I would not be surprised if they'll drop the router soon enough too as it's redundant with the Airave 3 / S1000 being able to offer AC WiFi + LTE &/or CDMA without the ipsec tunnel conflict. 

I was able to successfully flash my router to stock Asus to 376.3626 firmware to expand the rootfs boot partition from 32M to 64M.  Now I successfully flashed my Asus router to the latest Merlin firmware.  I guess I was a bit intimidated by the SNB forum guide and was comparing too much to the suggested youtube video which was for flashing a Tmobile router which does have some different steps since the Sprint router uses MIPS and Tmobile router uses ARM which led to further confusion.  It had good steps in the youtube video but the telnet commands were a bit different.

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Following up on my findings regarding the 80-85Mbps speed cap on this router...

Brother in law just got another one of these routers and hooked it up to his 100Mbps internet. He's experiencing the same thing. Whether wired or wireless, the internet will not test higher than 80-85Mbps. 

I turned off Smart Connect, tried different SSIDs, doesn't seem to make a difference. If anything, I'm very surprised the wired side is limited to 80-85Mbps to the WAN. I confirmed both routers have a gigabit connection to the modems, as indicated by the connection lights. 

I know flashing the firmware will more than likely fix this, but I'm not about to do that on 2-3 more routers as my friends and family get them. :-) Just curious if anyone has found a fix on the stock firmware, perhaps a setting buried somewhere that could be causing this. 

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I always flash routers, I never purchase one that can't support dd-wrt, tomato, openWRT etc.

One thing that's nice though when you have moutiple routers to flash is to do a batch of the same ones at the same time, if you can get your friends / family to order them at the same time and then they all wait and bring them over to you it's actually not all that bad to do 3-5 all at once.

Most of the time it takes to flash a router is the waiting game.  Get a few and just work round robin and by the time you're ready to go back and do the next step the first router is already past the waiting period.

 

Just a thought :)

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