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Can't update RT-AC68U firmware

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Welcome to the forums @fluikes69.

 
Please help, my RT-AC68U cannot be updated for a long time, the last fw is 386.7.
Do you have a T-Mobile branded (TM-AC1900) router? And if so was it properly jailbroken including the MTD5 partition fix? If not properly jailbroken one cannot flash later versions of Asus or Asus-Merlin firmware to the TM-AC1900 router. Example method of jailbreaking that specific router:
Flashing TM-AC1900 to RT-AC68U/P

Code for fixing MTD5 partition so you can update to latest firmware:
(this is entered in Putty after enabling SSH on the router)
Code:
cat /dev/mtd5 > /jffs/mtd5_backup.bin
mkdir /tmp/asus_jffs
mount -t jffs2 /dev/mtdblock5 /tmp/asus_jffs
rm -rf /tmp/asus_jffs/*
sync && umount /tmp/asus_jffs
rm -rf /jffs/.sys/RT-AC68U
nvram unset fw_check && nvram commit && reboot
Note: One proceeds at their own risk when jailbreaking the TM-AC1900 router or applying the MTD5 partition fix.
 

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