For instance, on Samsung Galaxy devices sometimes people end up with an error message “Firmware upgrade encountered an issue. Please select recovery mode in Kies & try again” while attempting to install firmware via Odin or getting OTA update. Here is a solution to fix this issue.
If you come across “Firmware upgrade encountered an issue. Please select recovery mode in Kies & try again” issue, the below guide may help you
- First of all, download and install Samsung Kies on your computer (if not already installed) 
- Then, note down the model number and the serial number (S/N) of your device. Serial number can find it under the battery or device’s box. 
- Connect your device to your PC and launch Kies. On Kies, go to Tools – Firmware Upgrade and Initialization 
- Enter your device model name (In capital letters only. e.g. GT-I9000) under “Enter device information” box and click on OK. 
- Now, you will be asked to enter the Serial Number of your device. Enter it and click OK. 
- Now Kies will prepare for firmware upgrade and starts downloading the firmware upgrade components for your device (It will take several minutes, depending on your internet connection speed) 
- On the next window follow all the instructions and confirm all security warnings. Then click “Start Upgrade” option. 
- The process will take several minutes. Once completed you will get “firmware upgrade successfully completed” messages. Click on OK and disconnect the cable. 
- Finally, reboot your device. Your device will boot normally. [Source – Androidcentral]