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Samsung SCH-E250 #1

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opened 2026-08-02 12:04:28 +07:00 by wrapper · 4 comments
wrapper commented 2026-08-02 12:04:28 +07:00
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Expected Behavior

The NAND dump should contain the graphics and the filesystem

Actual Behavior

The NAND dump returns consistent 0xffff (MD5: 8f01fc92f7332c80ff76f9e836a95369)

Steps to Reproduce the Problem

  1. on DCC Loader Settings, select DCC Loader: msm5500_kbb05_test_e250_poll.bin, HW Init Script: e250_init_from_code.has, DCC Loader RAM Base: 0x01000001
  2. Select Access ROM3 Address Space
  3. Set Data Length to 0x01000000 then click Read

Specifications

  • JTAG Interface: RIFF Box V1
  • Branch: reboot-v2
## Expected Behavior The NAND dump should contain the graphics and the filesystem ## Actual Behavior The NAND dump returns consistent 0xffff (MD5: 8f01fc92f7332c80ff76f9e836a95369) ## Steps to Reproduce the Problem 1. on DCC Loader Settings, select DCC Loader: msm5500_kbb05_test_e250_poll.bin, HW Init Script: e250_init_from_code.has, DCC Loader RAM Base: 0x01000001 2. Select Access ROM3 Address Space 3. Set Data Length to 0x01000000 then click Read ## Specifications - JTAG Interface: RIFF Box V1 - Branch: reboot-v2
wrapper changed title from Samsung SCH-E250 NAND to Samsung SCH-E250 2026-08-02 12:09:38 +07:00
wrapper commented 2026-08-02 12:10:04 +07:00
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Same issues also occur on ROM1 space (may not be controller related)

Same issues also occur on ROM1 space (may not be controller related)
wrapper commented 2026-08-02 16:09:06 +07:00
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PCAP dump of the DCC communication is normal but the data on the output file is all 0xffff
ROM1 and ROM3, same exact problem. Closing as issue with JTAG Interface Software

PCAP dump of the DCC communication is normal but the data on the output file is all 0xffff ROM1 and ROM3, same exact problem. Closing as issue with JTAG Interface Software
wrapper commented 2026-08-08 14:28:25 +07:00
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Issue reproduced with RIFF official DCC loader

Issue reproduced with RIFF official DCC loader
wrapper commented 2026-08-08 14:42:56 +07:00
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issue was confirmed to be caused from unactivated box, not JTAG Interface Software

issue was confirmed to be caused from unactivated box, not JTAG Interface Software
wrapper locked as Resolved and limited conversation to collaborators 2026-08-08 14:43:04 +07:00
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Reference: dumpnow/dccloader#1
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