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[Candy_40]

I have a TCL Roku TV stuck in a boot loop. I tried all the available reset methods, and none have revived the TV. It shows the red TCL Roku screen for a while, then goes black, comes on, and repeats over and over. 

I want to flash the firmware if I can directly, but the first step is providing a model number other than the 55S431 printed on the back of the TV. I need a number only found in the TV settings. This is impossible since the TV will not work correctly enough for me to retrieve this information. 

I reached out to TCL to see if they could provide the information based on the serial number, and they could not. 

I get to this site (https://tvupdate.roku.com/index?p=select) to see if I can get the firmware to flash, but it rejects 55S431 as a model number. 

Serial No: 2105NTM001299A01350

Model: 55S431

I like the TV and would love to revive it. It is too cheap to have repaired, so this is a last-ditch effort before it goes in a land fill. Sad. Is there another use for the panel? Is there a way to jump it right to an HDMI input bypassing the Roku? I really would hate to throw it away. 

[renojim · Accepted solution]

You can try C177X, but you also need a Roku serial number.  You should be able to get it from https://my.roku.com under your linked devices.  Good luck!  I don't know if the firmware will do you any good if the TV isn't somewhat functional.  I suspect there's a circuit board in your TV that has failed (main board or power supply board).