Y81 Dump File -

You are most likely to encounter a y81 dump file in the following directories:

Modern Vivo phones often require an "Authorized Account" or an "Auth Bypass Tool" to flash via USB. y81 dump file

binwalk -E y81_dump.bin

Flashing a full dump from another phone may overwrite your unique IMEI number. Always try to back up your NVRAM and NVDATA partitions first. You are most likely to encounter a y81