As you can see on the image the error shows that the firmware you flash is not compatible. So the issue is the compatibility issue. Try to flash it again with
g19 firmware posted above.
Then check the error again and make a screenshot and put it again here.
If you still getting errors while flashing using the firmware that I posted above. The only solution to force the flashing is to flash it with a TF card. The only problem is they don't have a link for the t2t_t25 boot image.
You can read the guide from here
http://www.innosilicon.com.cn/download/TF-card-firmware-update-manual-en.pdfWhat I think is to use the boot image from a4 miner then burn it on the TF card to flash your t2t_t25 miner with
G19_R1.2.img. Once its success you can upgrade it on the WebGUI and use this firmware below
g19
- http://www.innosilicon.com.cn/download/t2ti_20190515_095613.swu
To bring it back to normal design and GUI.
Take note: This is risky flashing with SD/TF card can damage the control board program and it might lead to hard bricked.
This is risky I don't know if this method will work I just check their download page and check all models one by one and I saw some of them use the same boot image which is "G19_R1.2.img". That's why I'm thinking that boot image will also work on t2t miner then upgrade it to the latest firmware to take the WebGUI back to its a normal design and the right firmware.
Or try to contact the Innosilicon and ask about the boot image for t2t_t25.img and maybe they can send it to you through email.