The NAND flash most likely couldn't be swapped into another phone. I'm not a BlackBerry expert, but on most cell phones, parts of the flash memory that contain important system files are encrypted with keys unique to the phones that they came in. Installing the NAND flash in another phone would most likely cause even more problems. Do you have a MicroSD card in the phone? You can take that out, put it in a card reader, and access the files on it independently from the phone. If not, recovery might still be possible. The first thing to try would be booting the phone in safe mode (If you haven't already tried it, you just turn the phone on while holding the escape key) The next is a little more risky. I don't know how the BlackBerry filesystem works, but if you can plug the phone in and mount the internal storage on a computer, you could theoretically use a data recovery program such as FileScavenger to recover the files that have been damaged or deleted. This, however, would require that you restore the phone to factory settings first. You could also use [http://www.byclouder.com/help/recovery/mobile/blackberry/how-to-recover-blackberry-z10-file.html|this method] that looks specifically tailored to the Z10. If you can't get the phone out of the bootloop, you don't have a lot of other options so the data recovery after a restore might be your best bet. Good Luck!