**Although 1vyrain has been very thoroughly tested and there were zero bricks during testing, there are some random quirks associated with bypassing normal flashing methods and things can always randomly go awry. There is no warranty or support guaranteed so please keep this in mind if you intend to use this software. I am not responsible for broken devices. Fortunately, it is impossible to permanently brick a device with this method. Worst case scenario, you can flash a backup or fresh BIOS using a hardware programmer.**
**Please pay careful attention to this section.** Ensure you're on a compatible BIOS version before beginning (check compatibility [here](https://github.com/gch1p/thinkpad-bios-software-flashing-guide#bios-versions)). Run [IVprep](https://github.com/n4ru/IVprep) if you are not or are unsure. Clear any BIOS passwords or settings prior to flashing, and do a BIOS setting reset if you can. Ensure your ThinkPad is charged and your adapter is plugged in. If you intend to use a custom binary, make sure you plug in ethernet prior to boot and that your binary is directly accessible via URL.
*X330 machines are supported but not automatically detected. They are detected as normal X230 machines. The flashing menu has an additional option to flash a BIOS with the LVDS patch for machines detected as an X230.*
Please read the [longform FAQ](https://medium.com/@n4ru/1vyrain-an-xx30-thinkpad-jailbreak-fd4bb0bdb654) before asking about compatibility or reporting an issue to make sure it is not a duplicate.
2. Boot in UEFI mode from the flash drive, with Secure Boot off. Only boot the USB via onboard USB ports. USB ports on a docking station, ultrabase, and external USB hubs can cause issues.
Don't be alarmed if your ThinkPad/ThinkLight power cycles a few times after a flash, or you get a CRC Security error. That is *normal* and will go away after another restart!
**NOTE:** This will NOT modify your EC. You are safe to flash your EC with the battery or keyboard mod at any time as long as you are on a version compatible with the EC mod (check compatibility [here](https://github.com/hamishcoleman/thinkpad-ec#compatibilty-warning)). Both IVprep and 1vyrain will only modify the BIOS region! You can safely use this image to update to the latest modded BIOS without losing your EC mod!
By default, the image includes the latest BIOS versions for all models, but you can flash a custom image such as heads, skulls, or a coreboot build. Make sure you have wired ethernet attached on boot, and that your image is *EXACTLY* 4MB and uploaded somewhere that you can grab with a simple `wget` command(http only, https currently not supported.). When asked what to flash, select "Flash a custom BIOS from URL" (option 2). Input the URL. That's it!
4. Apply xx30 patches for your specific model from [firmware-patches](https://github.com/digmorepaka/thinkpad-firmware-patches) repo and fix checksum with [uefi-sign](https://github.com/thrimbor/thinkpad-uefi-sign)
To update from an older version of 1vyrain, to a newer version follow the follwing steps. Updates may include security bug fixes.
1. Remove any BIOS passwords, including supervisor passwords
2. It is suggested to reset BIOS to default settings, and save
3. Take out any non-whitelisted devices because the FL1's are untouched
4. Use IVprep to downgrade to a flashable stock BIOS version (very important, do not skip!)
5. Obtain the latest 1vyrain image compatible with your machine.
6. Follow the original installation steps above.
**DO NOT SKIP** the IVprep process at step 4. This is needed to safely reset to a stock BIOS version. This is different from using IVprep during installation to ensure you are using the proper image. Do not skip step 4 above, this is a crucial step.
The steps to upgrade are essentially the same for downgrading, or moving to any version. Ensure you obtain a compatible 1vyrain image for your machine, reset all passwords, reset to default, and use IVprep to downgrade. You would then go through the installation steps to install the desired 1vyrain version.
I retain all rights to the code found in this repo (excluding the BIOS roms and the patcher binary), and no one may reproduce, distribute, or create derivative works from this repo without including this README.md file in its entirety!
Special thanks goes to the ThinkPad discord for their efforts testing, especially \x for helping create and finalize the BIOS patches, and digmorepaka for helping shrink the Linux image down significantly and continuing to maintain the repo.
Huge thanks go out to [gch1p](https://github.com/gch1p/thinkpad-bios-software-flashing-guide) for publishing the method used and [pgera](https://github.com/hamishcoleman/thinkpad-ec/issues/70#issuecomment-417903315) for the working commands, without them this would have not been possible.
