diff --git a/README.md b/README.md
index ac436e9..4313eb1 100644
--- a/README.md
+++ b/README.md
@@ -49,6 +49,10 @@ The BBK family has an unlocking problem. If in case of OPPO/Realme they at least
Well, that is if https://forum.xda-developers.com/t/how-to-unlock-bootloader-of-vivo-phones.3686690/ doesn't apply to you.
+On pre-May 2020 firmware. I believe these methods *were* ~universal, but proceed with caution:
+Vivo x70 Pro+: https://forum.xda-developers.com/t/vivo-x70-pro-bootloader-unlock-how-to-guide.4444989/
+Vivo Y31 2021: https://forum.xda-developers.com/t/unlocking-bootloader-rebooting-in-edl-without-testpoint-vivo-y31-2021.4440801/
+
### 5. OPPO/Realme (Non CN/IN)
I don't have a lot to say about OPPO.
The most annoying part about them is that you *can* unlock your bootloader, but only if you can enter fastboot. And guess what? They locked fastboot with an RSA key!