Samsung Galaxy S26 Ultra (SM-S948Q) - SJP - S948QOPU1AZDE firmware
Samsung Galaxy S26 Ultra firmware S948QOPU1AZDE is the Android 16 build for the Samsung Galaxy S26 Ultra (model SM-S948Q), released by Samsung for Japan (SJP). It was built on 22 April 2026, carries the 2026-04-05 Android security patch, has changelist 328434. The package combines system build S948QOPU1AZDE (AP/PDA) with CSC build S948QSJP1AZDE for the SJP region code. The download is 17.6 GB and has MD5 checksum 909a7c2b9c64244059127e3e635c373c, so you can verify the file after downloading. SamMobile added this file to the firmware archive on 19 June 2026.
How to flash S948QOPU1AZDE on the Samsung Galaxy S26 Ultra (SM-S948Q)
We recommend updating through Samsung's own tools: over-the-air (Settings › Software update) or Samsung Smart Switch on a PC. Flash the full firmware with Odin only when you are sure about the risks. A wrong region or a failed flash can brick the device, and SamMobile is not responsible for any damage.
- Download the firmware package above and extract the ZIP. It contains the AP (PDA), BL, CP and CSC files, plus a HOME_CSC file.
- Download and extract Odin on a Windows PC, and install the Samsung USB drivers if the PC does not detect the phone.
- Switch the device off and boot it into Download mode (usually Volume Up + Volume Down while connecting the USB cable, or Volume Down + Bixby + Power on older models).
- Open Odin. The ID:COM box turns blue when the device is connected.
- Load the files in their slots: BL, AP, CP and CSC. Use HOME_CSC to keep your apps and data, CSC to wipe the device.
- Leave Re-Partition unticked and click Start. The device reboots when Odin shows PASS. The first boot after a flash can take a few minutes.
Step-by-step PDFs: 5-file firmware and 1-file firmware.
What the build numbers mean
PDA / AP (S948QOPU1AZDE) is the Android system build; its last three characters encode the year, month and revision. CSC (S948QSJP1AZDE) is the region and carrier configuration, and CP is the modem firmware. The product code SJP identifies the region or carrier this package was made for (Japan); our list of Samsung CSC codes maps every code to its country and carrier. Flashing a package for a different product code changes carrier features and can be refused by the bootloader, so pick the one that matches the CSC shown under Settings › About phone › Software information.