Posted: Fri Jan 30, 2026 23:08 Post subject: New Build - 01/30/2026 - r63600
Welcome to Marvell r63600 beta release thread for reporting, feedback to developers and community benefit.
Please do not flash builds until installation is understood, risks involved and device specificrecovery 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}' (httponly) or 'curl -O {file URL}' (http, https, ftp) 'write {file} linux' then 'reboot'.
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: stracetcpdump.
• 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.
WRT1900ACv1 works with this version. /dev and ubootenv issues look to be resolved.
However, now that those two issues are resolved, the issue where SFE is not working (at factory defaults) is still present. The SFE issue was present before the /dev and ubootenv ones appeared.
Joined: 06 Jun 2006 Posts: 7763 Location: Dresden, Germany
Posted: Mon Feb 02, 2026 17:15 Post subject:
Rickers wrote:
WRT1900ACv1 works with this version. /dev and ubootenv issues look to be resolved.
However, now that those two issues are resolved, the issue where SFE is not working (at factory defaults) is still present. The SFE issue was present before the /dev and ubootenv ones appeared.
no sfe issue is know so far. sfe is a generic software nat acceleration which is generic and implemented on all device. its very unlikelly not to be working on your device. so configuration details are required here _________________ "So you tried to use the computer and it started smoking? Sounds like a Mac to me.." - Louis Rossmann https://www.youtube.com/watch?v=eL_5YDRWqGE&t=60s
WRT1900ACv1 works with this version. /dev and ubootenv issues look to be resolved.
However, now that those two issues are resolved, the issue where SFE is not working (at factory defaults) is still present. The SFE issue was present before the /dev and ubootenv ones appeared.
no sfe issue is know so far. sfe is a generic software nat acceleration which is generic and implemented on all device. its very unlikelly not to be working on your device. so configuration details are required here
I and others have been reporting this issue on WRT1900ACv1 for a while now. As far as configuration, I'm testing using factory defaults as I previously said.
Anyone with a 1900ACv1, try a speed test using this version with SFE on and report results.
Joined: 30 May 2017 Posts: 606 Location: Rural Manitoba
Posted: Sun Feb 08, 2026 15:11 Post subject:
Rickers, my speed is substantially reduced as I am on a VPN however with SFE enabled I now have the same speed with or without 35/10. _________________ Starlink & DSL ->
WRT3200acm Master WDS 5GHz 80Mhz CH 100 (+6) -r63600
Ath1 2.4Ghz Disabled
99 Static Leases
ExpressVPN
WRT3200acm -r63600 WDS-5Ghz Client
WRT3200acm-r61465 Spare
WRT3200acm-r62170 Spare
WRT1900Ac V1 5Ghz -r63600 WDS Station
WRT1900AC V1 -r63600 WDS Station
WRT1900AC SPARE r63600
WRT1900AC V1 5Ghz AC 80Mhz WDS-AP- - -r63600 2.4Ghz AP Ch1 HT20 Mixed
Joined: 06 Oct 2011 Posts: 36 Location: Belfast, Ireland
Posted: Sun Feb 08, 2026 20:31 Post subject:
Router/Version: WRT1900ACSv2
File/Kernel: DD-WRT v3.0-r63600 std (01/30/26) / Linux 6.1.161-rt28 #349 SMP Fri Jan 30 16:35:12 +07 2026 armv7l
Previous/Reset: DD-WRT v3.0-r61613 std (06/02/25) / no reset
Mode/Status: Router/Gateway/WAP on one, WAP only on the other
Issues/Errors: None so far _________________ All the best,
WRT1900ACv1 works with this version. /dev and ubootenv issues look to be resolved.
However, now that those two issues are resolved, the issue where SFE is not working (at factory defaults) is still present. The SFE issue was present before the /dev and ubootenv ones appeared.
no sfe issue is know so far. sfe is a generic software nat acceleration which is generic and implemented on all device. its very unlikelly not to be working on your device. so configuration details are required here
I have been having issues with SFE killing WAN speeds/connection since about build 59045. It happens on my WRT3200ACM and my WRT1900AC V1. With SFE enabled on the newer builds, I can barely complete a speed test. Others have reported the same. I have tested this with all default configuration with installs resetting to factory defaults as well as doing a hard reset on the router. The only configuration change from defaults were the username/password (as usual) and toggling SFE on and off. Even with SFE off, the WAN throughput is suboptimal, at least on my cable 1 Gbps down and 40Mbps up service.
WRT1900ACv1 works with this version. /dev and ubootenv issues look to be resolved.
However, now that those two issues are resolved, the issue where SFE is not working (at factory defaults) is still present. The SFE issue was present before the /dev and ubootenv ones appeared.
no sfe issue is know so far. sfe is a generic software nat acceleration which is generic and implemented on all device. its very unlikelly not to be working on your device. so configuration details are required here
I and others have been reporting this issue on WRT1900ACv1 for a while now. As far as configuration, I'm testing using factory defaults as I previously said.
Anyone with a 1900ACv1, try a speed test using this version with SFE on and report results.
You and I are in the same boat. I have tried 63600 on both my WRT3200 (my usual configuration and default) as well as my WRT1900ac V1 with default configuration (after both software reset and hard reset). SFE kills WAN performance. I posted my results in this thread.
