ASUS RT-AC65P restore factory firmware

Hi!

I successfully installed openwrt (21.02.0, r16279-5cc0535800) to my ASUS RT-AC65P. I never tried the original firware. I have a network speed problem (see below), and i try to restore original firmware. How can I do it?
I downloaded the original fw from the asus page: RT-AC65P_3.0.0.4_382_52516-gcca929d.trx

hd RT-AC65P_3.0.0.4_382_52516-gcca929d.trx | head
00000000  27 05 19 56 9d ac e2 cb  60 40 87 82 01 03 ff 3a  |'..V....`@.....:|
00000010  80 00 10 00 80 3a 81 30  f8 05 45 72 05 05 02 03  |.....:.0..Er....|
00000020  03 00 00 04 52 54 2d 41  43 38 35 50 00 00 00 00  |....RT-AC85P....|
00000030  7e 01 24 cd 1f ae 8f c0  ae d1 cd e2 a9 1a b6 80  |~.$.............|
00000040  6e 00 00 80 00 c0 aa 4e  00 00 00 00 00 00 00 6f  |n......N.......o|
00000050  fd ff ff a3 b7 7f 7d 38  d8 65 d6 c1 67 92 77 ed  |......}8.e..g.w.|
00000060  35 15 32 23 a7 96 7f 59  22 78 ef e4 4d 9f 72 67  |5.2#...Y"x..M.rg|
00000070  76 98 eb 3b 62 f9 6c 08  e2 7c f7 9e 13 19 08 20  |v..;b.l..|..... |
00000080  9a b7 cf 98 c7 99 2a 33  20 fb fa f3 ba 4a 81 3b  |......*3 ....J.;|
00000090  c7 8b ea 08 9c d4 35 5d  bb 35 59 a7 c5 f6 72 12  |......5].5Y...r.|

hd openwrt-21.02.0-ramips-mt7621-asus_rt-ac65p-squashfs-factory.bin | head
00000000  27 05 19 56 90 fa 26 9c  61 2e ab 18 00 24 47 e2  |'..V..&.a....$G.|
00000010  80 00 10 00 80 00 10 00  1c 08 c2 5b 05 05 02 03  |...........[....|
00000020  4d 49 50 53 20 4f 70 65  6e 57 72 74 20 4c 69 6e  |MIPS OpenWrt Lin|
00000030  75 78 2d 35 2e 34 2e 31  34 33 00 00 00 00 00 00  |ux-5.4.143......|
00000040  6d 00 00 20 00 96 81 71  00 00 00 00 00 00 00 6f  |m.. ...q.......o|
00000050  fd ff ff a3 b7 7f be a4  ea 00 84 e2 86 4a f0 30  |.............J.0|
00000060  67 79 be 77 34 fd de dd  6e 1d 9d 91 3a a7 b6 b0  |gy.w4...n...:...|
00000070  c0 a1 d3 40 10 9f 80 ad  c0 a2 d5 02 22 eb 51 0c  |...@........".Q.|
00000080  36 67 e7 1f cc bf 47 64  35 86 ed 60 d0 88 bf 60  |6g....Gd5..`...`|
00000090  34 fd cc c8 eb d9 42 bc  39 80 af 8c b9 65 b6 5c  |4.....B.9....e.\|

Can I use LUCi "Flash new firmware image" function?
"Upload a sysupgrade-compatible image here to replace the running firmware."


My network proble is: my internet connection is 1Gigabites, when i connect my pc directly the provider's cable modem my speed 1Gigabites, but if i connect asus router wan port to cable modem, and my pc to the lan port, my speed just ~400Megabites, i would like to try the original fw the speed in same situation. Or any idea about my speed issue??

thanks,
Mark

You can't use LuCI to flash Asus OEM firmware.

See OEM installation method using TFTP (Update: Corrected URL)
https://openwrt.org/toh/asus/rt-ac85p#oem_installation_using_the_tftp_method

Alternatively, the Asus Firmware restoration utility for Windows may work with your router? Try this at your own risk.

Instructions for using the Asus utility for RT-AC57Uv1 is described here:
https://openwrt.org/toh/asus/rt-ac57u#asus_rescue_mode

https://www.asus.com/uk/support/FAQ/1000814/

TBH, I'd be surprised if RC-AC85p/65p MT7621AT is even capable of routing 1Gbps using OpenWrt !

I recall my RT-AC57U v1 could not route at 1 Gbps.

Check out the forum for hardware and software offloading. Thiis may help improve performance, but TBH, you need a faster ARM powered openwrt router for your gigabit fibre connection.

Asus OEM firmware WAN to LAN performance should be faster provided you do not turn on QoS.

Update: corrected URL for RT-AC85p oem firmware using TFTP

Oops, I posted wrong link. Here is corrected link

See OEM installation method using TFTP for RT-AC85P/65P
https://openwrt.org/toh/asus/rt-ac85p#oem_installation_using_the_tftp_method

Thanks!

I succesfully restore factory firmware with asus firmware restoration utility. And with the factory firmware the speed is 1G from lan to wan. (With openwrt is only 400M)

best regards,
Mark

1 Like

Please mark as solved.

I've also updated the RT-AC85P/65P wiki page following your success.
https://openwrt.org/toh/asus/rt-ac85p#asus_rescue_mode_verified_for_rt-ac65p_only

Hi!

Of course! I followed this video for restore factory fw: https://www.youtube.com/watch?v=T8YKnpXxhx0
But if i make a guest network in factory firmware, and reduce the traffic 1M with built in Traffic Manager (QOS) the guest network speed is 1M but the (not guest) lan-wan speed is reduced too cca 400-500M. I didnt try turn off qos in guest network in openwrt.

best regards,
mark

fyi, there is no QoS by default in OpenWrt. You have to install additional package, like SQM, to be able to enable QoS.

you are right, i installed qos package, but if I have more free time (maybe sunday) i will try to reinstall openwrt without qos, and rerun speed test

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