Guru Meditation Error: Core 1 panic'ed - Two Trees TTS-20 Pro

Good day,

after three days I turned on my “Two Trees TTS-20 Pro”, it won’t return to the home position and the console in LightBurn keeps writing this:

Build:Mar 27 2021
rst:0xc (RTC_SW_CPU_RST),boot:0x28 (SPI_FAST_FLASH_BOOT)
Saved PC:0x420a5092
mode:DIO, clock div:1
SHA-256 comparison failed:
Calculated: 0bb45b01207a4a9e9fca8880ddfc0f79112bfa4d004bd1e6b2eaa75c5323b19d
Expected: 6eb14ec480aff4f05e39378c41406102ac163573741e63b6cfd73509ef44e3bd
Attempting to boot anyway…
entry 0x403b61d8
Guru Meditation Error: Core 1 panic’ed (LoadProhibited). Exception was unhandled.
Core 1 register dump:
PC : 0x4200ac04 PS : 0x00060530 A0 : 0x00000000 A1 : 0x3fce5a80
A2 : 0x00000000 A3 : 0x3fc9b50c A4 : 0x3fc9ca50 A5 : 0x00000000
A6 : 0x00000000 A7 : 0x00000000 A8 : 0x8200abfb A9 : 0x3fce5a60
A10 : 0x0000000d A11 : 0x3fc966b0 A12 : 0x00000014 A13 : 0x00000004
A14 : 0x3fce5bf0 A15 : 0x80000001 SAR : 0x0000000a EXCCAUSE: 0x0000001c
EXCVADDR: 0x00000022 LBEG : 0x40056f08 LEND : 0x40056f12 LCOUNT : 0x00000000
ELF file SHA256: 0000000000000000

Two Trees Support did not respond even after two days. I’m disappointed. Is there anyone who has the same machine and would provide the files that are on the machine’s SD card? My card is unreadable. Or anyone who has the firmware available for this machine?
There is no firmware download on the TwoTrees official website.

Triple checked your Power Adapter?

Depending on your USB power output you might be having a voltage restart isse going on there.

The adapter lights up, the machine turns on with the switch. LB immediately starts trying to connect and prints the specified error.
There is the same post here on the forum, but it is closed, it should be a damaged firmware and a new firmware needs to be flashed.

If that were to be the case using the firmwre updat tool could help

I do doubt it

I write in the post, there is no downloadable firmware on their website, unfortunately.

Note there is one under “tools”


MKSLaserTool is a firmware upgrade/flash tool. But to be able to do that, you have to have the firmware. And I don’t have that one. And there is nowhere to download it.

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It’s stupid not being able to message the user from the above thread, he received new firmware from TT. Maybe he would share it. I’ve been waiting for almost 3 days and no response from TT :frowning:

We can ping him

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To @CatJ, I have the same problem with the TTS-20Pro as you did. Support TT does not respond to email or chat for two days. Could you please send me the firmware they sent you? To email Big thanks!

Two Trees finally replied to my email and sent me the firmware, the .BIN file, if anyone needs it, they can download it here:

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