Tech/NordCE2.md
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@@ -12,7 +12,7 @@ Model Code
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: IV2201
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Model Codename
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-:
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+:
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Purchased
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: 2022-08-30
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@@ -24,18 +24,38 @@ RAM
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: 8GB
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Factory Firmware Version
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-: IV2201_11_A.11
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+: `IV2201_11_A.11`
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Firmware Version
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-: IV2201_11_A.13
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+: `IV2201_11_A.13`
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XDA Devs
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: https://forum.xda-developers.com/f/oneplus-nord-ce-2.12541/
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+# Firmware Versions
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+- A.11 was original factory version
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+- A.12, A.13 are incremental updates
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+- C series is Android 12 preview
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+ - [released](https://community.oneplus.com/thread?id=1110424001643544581) with a rollback package for A.13
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+
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+
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# Rooting
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-* https://www.getdroidtips.com/oneplus-nord-ce-2-5g-firmware-flash-file/
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-* https://www.droidwin.com/how-to-root-oneplus-nord-ce-2-via-magisk-and-ofp-firmware/
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+- https://www.getdroidtips.com/oneplus-nord-ce-2-5g-firmware-flash-file/
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+- https://www.droidwin.com/how-to-root-oneplus-nord-ce-2-via-magisk-and-ofp-firmware/
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+- [Android 12 preview with A.13 rollback package](https://community.oneplus.com/thread?id=1110424001643544581)
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+
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+## Files
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+- https://oxygenos.oneplus.net/oplus_ota_downgrade_Rollback.zip , contains:
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+ - `ota_downgrade.zip`, contains (sha1sum):
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+ - `678275d44cbec87a64be8c7fbf450cd2c80d58ab vbmeta.img`
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+- `boot.img`
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+ - [`A13P2.img` India A13 patched](https://forum.xda-developers.com/t/magisk-support-for-nord-ce2.4414613/post-87154769) (sha1sum: `91cf3ae2454bf6689a1faa5b8babcb96a2b25a6e`)
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+- `vbmeta.img` (India A12) (sha1sum: `7f61424960d481b06ce515597482df4db84a48eb`)
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+
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+
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+
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+## Procedure
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1. Developer Mode
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1. OEM Unlocking
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@@ -52,13 +72,19 @@ XDA Devs
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1. Download Magisk APK
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1. Download firmware of OnePlus Nord CE 2 (the same version that is installed on your phone)
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- 1. Extract firmware and copy the `boot.img` to phone
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- 2. Install Magisk app
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- 3. Open Magisk app, click Install.
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- 4. "Select and patch a file", patch `boot.img`
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- 5. Copy phone:`magisk_patched.img` to host
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- 6. `fastboot --disable-verity --disable-verification flash vbmeta vbmeta.img` (otherwise bootloop)
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- 7. `fastboot flash boot magisk_patched.img`
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+ 1. Patch bootloader
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+ 1. Extract firmware and copy the `boot.img` to phone
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+ 2. Install Magisk app
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+ 3. Open Magisk app, click Install.
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+ 4. "Select and patch a file", patch `boot.img`
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+ 5. Copy phone:`magisk_patched.img` to host
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+ 2. `fastboot --disable-verity --disable-verification flash vbmeta vbmeta.img` (otherwise bootloop)
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+ 3. `fastboot flash boot magisk_patched.img`
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+
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+```
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+fastboot --disable-verity --disable-verification flash vbmeta vbmeta-a13-rollback.img
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+fastboot flash boot A13P2.img
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+```
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## Bootloop Recovery
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- Hold Power and Vol Down to reboot to bootloader