Same as the error above. Same as the error from "Youseli". I tried to use the bin file you shared but unfortunately it does not work on my end. Attached is the backup bin file of my acer chromebook 514.
Yes. I just need to reset the laptop also. I can't managed to do that because the bios is locked. Maybe, the bios reflashing will help.
Sir, the problem still shown after reflashing using the bin you sent. Kindly check the attached file.
After flash my file You need to enable devmode first. It will not let you go to devmode but that's okay. You need to let it reboot into normal mode, which clears the system. Then you will be able to log in and powerwash. After powerwashing, devmode is unlocked aswell. Turn on laptop, boot to recovery mode (esc, refresh and power, hold esc + refresh until in recovery mode). Press ctrl + D, press enter. Press ctrl + D and press enter again. Don't remember the exact process but the idea is to try gp tp developer mode. It usually says that dev mode is disabled but that does not matter yet. Anyway, you just need to wait until laptop restarts. It should clear all data. Then just let it boot normally and log in with your gmail account. Then go to settings and powerwash. After you powerwash, dev mode should be unlocked and you should be able to use any gmail account.