Moritz Meißelbach

R02/R04 — EDL 900E Mode; Wrong Programmer

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R02 — EDL 900E Mode: No Recovery Loader

FieldValue
Severity🔴 Critical
TriggerDevice fully unresponsive in 900E mode

EDL 9008 (software-triggered via adb reboot edl) is the only recovery path. 900E (D+/GND cable short) can only dump memory — it cannot flash partitions. Always keep a working OS on the device. Never flash boot without a verified backup.

R04 — Wrong EDL Programmer

FieldValue
Severity🔴 Critical
TriggerUsing NA2 UFS programmer on NA1 eMMC

Always confirm target device before selecting programmer. NA1 programmer: prog_emmc_ufs_firehose_Sdm636_ddr.elf. NA2 uses a UFS programmer — incompatible with NA1’s eMMC.

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