jailm8 VS checkra1n-linux

I tried to do that first but it didn't work. So I try to manully put my iPhone into DFU mode. Maybe it the problem with ubuntu usb driver or sth idk. But Jailm8 work for me.

I recommend you follow the guide at https://github.com/SarKaa/jailm8/wiki/Jailm8-wiki as it's pretty straightforward. Just make sure when you attempt to jailbreak that you enable the BPR bypass in checkra1n's advanced settings or it won't succeed.

I'd like to add my +1 for jailm8, which has already been updated to checkra1n 0.12.4. It's been super stable for me and has a few other utilities built in, like iRecovery (which can kick you our of DFU mode). Here's the link: https://github.com/SarKaa/jailm8/releases. Just follow this guide for setting it up and it works great.

If you have a PC and a USB thumb drive, use this. Works great. If you don't have a computer at all, you could invest in a ra1nbox; they're super convenient but they're a bit pricey.

Follow this guide, it's super easy.

link https://github.com/SarKaa/jailm8/releases/tag/3.0.1

Jailm8 is another option; you boot it from a USB thumb drive and it boots right into checkra1n. Has a few other solid features too. Instructions are here -- it's super simple to set up. I have an ancient laptop I'd more or less junked a long time ago and now it's a dedicated checkra1n box using jailm8. :)

Okay. I think I’ve figured out what you’re trying to do here. On the jailm8 GitHub, the newest release has a note of this issue. It has instructions on how to fix it here https://github.com/SarKaa/jailm8/releases/tag/4.0.0

If you're looking for something like this for Linux, my checkra1n utility does this as well (although it's not nearly as pretty).