# TM-AC1900
Automatic CFE flashing tool for TM-AC1900 -> ASUS AC68U

As always, flash CFE is tricky, the script is free for anyone to use at your own risk, 
I will not be responsible if anything goes south.


Step 1:
Obtain any ASUS AC68U CFE binary such as 1.0.2.1 tested. You can download it here:
https://mega.nz/#!V14VXZja!Z_MkN4MjfKmFRh06uuZN9idoqt2yOoWQot_ClCmno_c
Rename it to new_cfe.bin

Get either telnet or SSH access to the TM-AC1900 router, and make the auto_cfe.sh script + the new_cfe.bin available to the system.
If you have SSH access, you can use scp to /tmp; otherwise a USB key is always handy.

Step 2:
cd to the directory where both new_cfe.bin and the auto_cfe.sh script sits in, run it and enjoy watching.

Now you have the ASUS CFE! You have passed the only step that can really brick your router.

Step 3:
Next it is recommended to expand root partition use this firmware:
http://dlcdnet.asus.com/pub/ASUS/wireless/RT-AC68U/FW_RT_AC68U_30043763626.zip
Flash it use CFE webpage is most reliable, you can directly boot into CFE after the above step 3.
Alternatively, if you are not able to use CFE mini-webpage to flash and get stucked at this step, You may want to use 
Firmware Restoration Tool downloadable from ASUS website: http://www.asus.com/Networking/RTAC68U/HelpDesk_Download/
ASUS Firmware Restoration version 2.0.0.0 and ASUS Device Discovery version 1.4.7.1 are used to upload/flash FW_RT_AC68U_30043763626.trx

** Perform a manual NVRAM clear use WPS button after every firmware flash **

From now on you can flash pretty much anything through the normal firmware update web page.

I am using the Shibby AIO tomato for your reference:
http://tomato.groov.pl/download/K26ARM/138-MultiWAN/tomato-RT-AC68U-ARM--138-AIO-64K.zip

A lighter version maybe good too if you do not need all the features in AIO and could use some extra JFFS space:
http://tomato.groov.pl/download/K26ARM/138-MultiWAN/tomato-RT-AC68U-ARM--138-VPN-64K.zip