Case 1.

1. Update Sequence

1. Enter Recovery mode.
2. Parse metadata ( META-INF/com/android in update.zip)
3. Check “post-build-incremental”, this is version of image.
4. if post-build-incremental is lower than specified version. do exit recovery mode.
5. Otherwise, proceed continually.

2. Source Code Analysis

3. Pre-Condition

• Version xxx.xx in Flow chart is first version which support new phy driver.

4. Flow Chart

5. OTA methods

• Emergency recovery ( FTP )

  → If there is not update.zip in usb memory stick, update.zip will be downloaded fromFTP server of SKB.

• Emergency recovery (USB)

  → Using update.zip in usb memory stick.

• Normal OTA ( /cache )

  → main s/w download update.zip in /cache and recovery will use it.

• factory_reset OTA

  → ??