Samsung Galaxy Tab A7 LTE (SM-T505) - TEL - T505XXU3BUD7 firmware
Samsung Galaxy Tab A7 LTE firmware T505XXU3BUD7 is the Android 11 build for the Samsung Galaxy Tab A7 LTE (model SM-T505), released by Samsung for Australia (Telstra) (TEL). It was built on 20 April 2021, carries the 2021-03-01 Android security patch, has changelist 21303446. The package combines system build T505XXU3BUD7 (AP/PDA) with CSC build T505OLM3BUD7 for the TEL region code. The download is 3.7 GB and has MD5 checksum 841573be7a04a8f8494d60749d071aa1, so you can verify the file after downloading. SamMobile added this file to the firmware archive on 24 May 2021.
How to flash T505XXU3BUD7 on the Samsung Galaxy Tab A7 LTE (SM-T505)
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 (T505XXU3BUD7) is the Android system build; its last three characters encode the year, month and revision. CSC (T505OLM3BUD7) is the region and carrier configuration, and CP is the modem firmware. The product code TEL identifies the region or carrier this package was made for (Australia (Telstra)); 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.