While an FLP downgrader can successfully force FL Studio to open a file, it . It cannot backport features that do not exist in your older software.
Most official flashing tools contain a "Version Guard." If the target FLP has a newer "User Code" (checksum/date stamp), the tool refuses to write the old one. A downgrader modifies the flashing utility (via hex edit or API hooking) to skip this comparison. flp downgrader