ASUS TM-AC1900 unable to downgrade

[Demontager]

I have TM-AC1900 router and i tried to make it act as Aimesh node. After many unsuccessful tries to add it as node i googled and found that i have missed to downgrade firmware first therefore I made mistake and uploaded Merlin 386.7.2.
I tried to use Asus Restore Tool to flash FW_RT_AC68U_30043763626.trx, but it says router not in Recovery Mode, sure it was(diode blinking).

 

[RMerlin]

This is a TM-AC1900, therefore you must flash a TM-AC1900 firmware. The RT-AC68U firmware does not support that model.

 

[Demontager]

Yes, but i'm trying to do cross-flasing tm-ac1900 to rt-ac68u according to manual

 

[Joshuajackson]

just flash your stock firmware and then upload the asus firmware you want

 

[RMerlin]

Yes, but i'm trying to do cross-flasing tm-ac1900 to rt-ac68u according to manual

Cross-flashing is not supported, and discussions on how to force it are disallowed on these forums, sorry.

SNBForums Policy on ASUS TM-AC1900 Conversion Discussion

Further discussion of methods to get around ASUS' lockdown of TM-AC1900 firmware to prevent conversion to RT-AC68U will not be allowed. The main discussion thread has been deleted. Conversations related to defeating the lockdown have been deleted. New threads or Conversations opened on the...

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