Most bootloaders require with a standard allocation size (4096 bytes).
Because it is usually an update fragment or a cache file, deleting it will not break your SD card or your device. However, keep these two things in mind: Uupd.bin Sd Card
Why the filename matters
A: CRC error means the file is corrupted or incomplete. Re-download, check the file size, and ensure the SD card has no bad sectors. Most bootloaders require with a standard allocation size