New Build - 08/31/2026 - r66073

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blkt
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Joined: 20 Jan 2019
Posts: 6560

PostPosted: Tue Sep 01, 2026 16:52    Post subject: New Build - 08/31/2026 - r66073 Reply with quote
Welcome to MediaTek r66073 beta release thread for reporting, feedback to developers & community benefit.
Please do not flash builds until installation is understood, risks involved and device specific recovery methods.
Avoid discussions, create threads for questions, general problems or use search; this thread is not for support.
List router model & version or revision, operating & wireless modes & exact filename/firmware image flashed.


CLI Flash: 'cd /tmp' then 'wget {file URL}' (http only) or 'curl -O {file URL}' (http, https, ftp) 'write {file} linux' then 'reboot'.

Downloads: HTTPS, FTP

Trac SVN: repository since last build r65953 (mirror)

• OpenVPN 2.7.5: Changelog, Guides, Server, PBR, DNS, Kill Switch, Watchdog, Reverse PBR, Client, Multiple, tips, scripts.
• WireGuard 1.0.20211208/Tools: Changelog, Guides, Client, Server, Adv, PBR, KS, tips, scripts. Thanks BS egc & eibgrad!

Notes: ...
r64210 r64453 r64533 r64600 r64764 r64954 r65002 r65079 r65140 r65291 r65498 r65574 r65639 r65727 r65774 r65876
r65908 r65953 r66073

Issues, observations, and/or workarounds reported:
• WebUI: Clear history or use a portable. Temporary cache bypass: Ctrl+F5, Cmd+Shift+R or new private window/incognito.
• Please report findings with steps needed to reproduce, configuration, clients, output, logs and important information below!

Important:
• Detail issues & relevant configs, logs: syslog klog 'dmesg' 'cat /tmp/var/log/messages' nvram set console_debug=1, serial.
• Firewall NAT: 'iptables -vnL' 'iptables -t nat -vnL' 'iptables -t mangle -vnL' & 'cat /tmp/.ipt'. Debug Analyze: strace tcpdump.
• Gremlins: reboot. cold boot. Reset & reconfigure not restore backup. Search Trac & discuss in forum before opening tickets.
• Include operating & wireless modes (e.g. Gateway, Router, AP, SB, WDS, Mesh) and applicable configurations to reproduce.

Example Template:
Code:
[b]Router/Version: [/b]
[b]File/Kernel: [/b]
[b]Previous/Reset: [/b]
[b]Mode/Status: [/b]
[b]Issues/Errors: [/b]
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Iceberger
DD-WRT User


Joined: 03 Jun 2018
Posts: 74

PostPosted: Wed Sep 02, 2026 14:57    Post subject: Router reboots after 4 seconds flashing Reply with quote
Router/Version: Dlink DIR-882 A1
File/Kernel: Linux 6.12.101 #1582 SMP Wed Aug 5 04:10:37 +06 2026 mips
Previous/Reset: DD-WRT v3.0-r65876 std (08/05/26) / No
Mode/Status: Router / AP
Issues/Errors: Router reboots after 4 seconds flashing.

Shows in the browswer: http://192.168.1.1/Success_u_s.asp
Starts up with firmware version: DD-WRT v3.0-r65876 std (08/05/26) - the version I'm on now
This problem started sinds version: 08-15-2026-r65953
kernel-panic69
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Joined: 08 May 2018
Posts: 17402
Location: Texas, USA

PostPosted: Wed Sep 02, 2026 15:48    Post subject: Reply with quote
Did you try flashing via CLI? You'd have to SCP the webflash file to the router since wget and curl cannot process the Anubis challenge and FTP binary is usually not available within the firmware. Need to know if the firmware image size is too big, etc. Serial or tailing syslog during flashing may also give some info. Can't forward report without further info. Still waiting on any reports on Netgear devices, too.
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Iceberger
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Joined: 03 Jun 2018
Posts: 74

PostPosted: Fri Sep 04, 2026 10:05    Post subject: Reply with quote
kernel-panic69 wrote:
Did you try flashing via CLI? You'd have to SCP the webflash file to the router since wget and curl cannot process the Anubis challenge and FTP binary is usually not available within the firmware. Need to know if the firmware image size is too big, etc. Serial or tailing syslog during flashing may also give some info. Can't forward report without further info. Still waiting on any reports on Netgear devices, too.


Never tried flashing from CLI before... i'm afraid to brick my router...
kernel-panic69
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Posts: 17402
Location: Texas, USA

PostPosted: Fri Sep 04, 2026 14:54    Post subject: Reply with quote
Without a log of the flash, I will venture to presume the images are too big to flash:

DD-WRT v3.0-r65876 std (08/05/26)
Code:
dlink-dir882-a1-webflash.bin     05-Aug-2026 05:43     15663132
factory-to-ddwrt.bin             05-Aug-2026 05:43     15663104

DD-WRT v3.0-r66073 std (08/31/26)
Code:
dlink-dir882-a1-webflash.bin     31-Aug-2026 05:32     16580636
factory-to-ddwrt.bin             31-Aug-2026 05:32     16580608

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Iceberger
DD-WRT User


Joined: 03 Jun 2018
Posts: 74

PostPosted: Tue Sep 08, 2026 10:29    Post subject: Reply with quote
kernel-panic69 wrote:
Without a log of the flash, I will venture to presume the images are too big to flash:

DD-WRT v3.0-r65876 std (08/05/26)
Code:
dlink-dir882-a1-webflash.bin     05-Aug-2026 05:43     15663132
factory-to-ddwrt.bin             05-Aug-2026 05:43     15663104

DD-WRT v3.0-r66073 std (08/31/26)
Code:
dlink-dir882-a1-webflash.bin     31-Aug-2026 05:32     16580636
factory-to-ddwrt.bin             31-Aug-2026 05:32     16580608


Is there another way to flash it? or it will always fail because of the size?
kernel-panic69
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Joined: 08 May 2018
Posts: 17402
Location: Texas, USA

PostPosted: Tue Sep 08, 2026 14:24    Post subject: Reply with quote
For D-Link, you can flash via Emergency Room. I wouldn't try flashing an oversize file, though. Also, the current release that just dropped yesterday / today is still probably too big. This is why verification is needed via logs, preferably serial.
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