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ISP (pinout) Samsung Galaxy S26 (SM-S942B) UFS ISP Pinout | Direct Boot Repair

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Filesupport

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Samsung Galaxy S26 (SM-S942B) UFS ISP Pinout | Direct Boot Repair

Device & Technical Details:

  • Brand / Model: Samsung Galaxy S26 (<span>SM-S942B</span>)
  • Processor Platform: Samsung Exynos 2600 / Qualcomm SM8850 (Region Dependent)
  • Storage Type: UFS 4.0
  • Connection Protocol: UFS ISP (In-System Programming)
  • Status: Hardware Tested & Verified

Pinout Signals & Connection Points​

UFS direct bağlantısı (ISP) yaparken lehimlenecek kritik hatlar:

  • TX0_P / TX0_N (Data Transmit Differential Pair)
  • RX0_P / RX0_N (Data Receive Differential Pair)
  • REF_CLK (Reference Clock Line)
  • RESET (UFS Hardware Reset)
  • VCC (2.5V - 3.3V Core Power)
  • VCCQ / VCCQ2 (1.2V / 1.8V I/O Interface Power)
  • GND (Ground / Şase)

Compatible Programmer Hardware​

  • EasyJTAG Plus (with UFS ISP socket / adapter)
  • Medusa Pro II (UFS ISP mode)
  • MiPi Tester Box (Direct High-Speed UFS ISP)
  • UFI-UFS ToolBox

Practical Instructions:​

  1. Wire Length: Always use enameled copper jumper wires no longer than 3–5 cm to avoid signal attenuation on high-frequency differential lines (TX/RX/CLK).
  2. Power Supply: If powering externally, connect the original USB Type-C cable or battery; otherwise, supply precise voltages (VCC: 2.5V–3.3V, VCCQ: 1.2V–1.8V) via the programmer box.
  3. Safety Backup: Once connected, immediately read and dump LUN0, LUN1, LUN2, and critical security partitions (EFS, SEC_EFS, NV/Modem).
 

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