Qualcomm EDL mode

The Qualcomm Emergency Download mode, commonly known as Qualcomm EDL mode and officially known as Qualcomm HS-USB QD-Loader 9008[1] is a feature implemented in the boot ROM of a system on a chip by Qualcomm which can be used to recover bricked smartphones.[2][3] On the Pixel 3s, the feature was accidentally shown to users after the phone was bricked.[4]

Access

The Android Debug Bridge can be utilized to get access to EDL mode, with the command adb reboot edl.[2]

References
  1. Zhao, Longze; Xi, Bin; Wu, Shunxiang; Aizezi, Yasen; Ming, Daodong; Wang, Fulin; Yi, Chao (2018). "Physical Mirror Extraction on Qualcomm-based Android Mobile Devices". Proceedings of the 2nd International Conference on Computer Science and Application Engineering - CSAE '18. Hohhot, China: ACM Press: 1–5. doi:10.1145/3207677.3278046. ISBN 978-1-4503-6512-3.
  2. EASTTOM, CHUCK (2021). An In-Depth Guide to Mobile Device Forensics. [S.l.]: CRC PRESS. p. 72. ISBN 0-367-63300-0. OCLC 1250310301.
  3. Tang, Qinghao (2021). Internet of things security : principles and practice. Fan Du. Singapore. p. 166. ISBN 981-15-9942-4. OCLC 1236261208.
  4. Amadeo, Ron (2021-09-03). "Reports of Pixel 3s bricking with "EDL" message are growing". Ars Technica. Retrieved 2021-09-11.
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