I have 2 SD cards, and was planning to save all files into one SD Card, but before transfering the files, I accidentally formatted the SD Card, how can I get the formatted files back, pls help.

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Sorry for hearing this. Fortunately you can recover the files back easily with the help of data recovery software. Software of this kind can recover formatted SD card as well as other external storage devices. Connect your card to your computer using a SD card reader/adapter. Open the software. Select your card on the software's interface and click the scan button. After the scan is finished, select the files you need to recover and choose a folder to keep the recovered files. It's very easy. Here's a complete guide that can help. https://www.cisdem.com/resource/recover-formatted-sd-card.html

Also, it's a good practice to back up your SD card data regularly.Here's an article that may be helpful. https://www.cnet.com/how-to/how-to-store-your-photos-while-travelling/