[nearby] Update README
Test: n/a
Ignore-AOSP-First: nearby_not_in_aosp_yet
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:99c18f649c9a2623c905f9cbfea04a2559756050)
Merged-In: I0802e60f60170b3be686fa7b16aeb6a2571a7386
Change-Id: I0802e60f60170b3be686fa7b16aeb6a2571a7386
diff --git a/nearby/README.md b/nearby/README.md
index 8451882..2731b3e 100644
--- a/nearby/README.md
+++ b/nearby/README.md
@@ -47,12 +47,19 @@
## Build and Install
```sh
-$ source build/envsetup.sh && lunch <TARGET>
-$ m com.google.android.tethering.next deapexer
-$ $ANDROID_BUILD_TOP/out/host/linux-x86/bin/deapexer decompress --input \
- ${ANDROID_PRODUCT_OUT}/system/apex/com.google.android.tethering.next.capex \
- --output /tmp/tethering.apex
-$ adb install -r /tmp/tethering.apex
+Build unbundled module using banchan
+
+$ banchan com.google.android.tethering mainline_modules_arm64
+$ m apps_only dist
+$ adb install out/dist/com.google.android.tethering.apex
+$ adb reboot
+Ensure that the module you are installing is compatible with the module currently preloaded on the phone (in /system/apex/com.google.android.tethering.apex). Compatible means:
+
+1. Same package name
+2. Same keys used to sign the apex and the payload
+3. Higher version
+
+See go/mainline-local-build#build-install-local-module for more information
```
## Build and Install from tm-mainline-prod branch
@@ -63,7 +70,7 @@
This is because the device is flashed with AOSP built from master or other branches, which has
prebuilt APEX with higher version. We can use root access to replace the prebuilt APEX with the APEX
built from tm-mainline-prod as below.
-1. adb root && adb remount; adb shell mount -orw,remount /system/apex
+1. adb root && adb remount -R
2. cp tethering.next.apex com.google.android.tethering.apex
3. adb push com.google.android.tethering.apex /system/apex/
4. adb reboot