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Reset IDFA/V (clear.idfav)

Declaration​

oldInfo = clear.idfav([ newInfo ])

Parameters​

  • newInfo
    String, optional. Provide a specific idfav info string to set as the device's new idfav.
    If omitted, the device's current idfav will be cleared and iOS will re-generate it later.
    Pass "read" to read the current device idfav without clearing.

Returns​

  • oldInfo
    String or nil. The device's previous idfav info on success; nil on failure.

Notes​

Reset device identifiers such as IDFA and IDFV.
If an invalid idfav string is provided, the operation fails and returns nil.
Without parameters, the current idfav is cleared and iOS will randomly reassign a new one afterward.
You may save the returned idfav string to a file for later restore by passing it back as the parameter.

Example​

-- Backup idfav info
app.quit('*') -- close all apps
local old_idfavs = clear.idfav()
local f = io.open("/var/mobile/Media/1ferver/res/old_idfavs.txt", "wb")
if f then
    f:write(old_idfavs)
    f:close()
    clear.caches() -- clear system caches
    sys.alert("Backup succeeded")
else
    clear.idfav(old_idfavs) -- restore immediately if backup failed
    clear.caches() -- clear system caches
    sys.alert("Backup failed")
end
--
-- Restore idfav info from file
local f = io.open("/var/mobile/Media/1ferver/res/old_idfavs.txt", "rb")
if f then
    local old_idfavs = f:read("*a")
    f:close()
    close_all_app() -- close all apps
    local current_idfavs = clear.idfav(old_idfavs)
    if current_idfavs then
        f = io.open("/var/mobile/Media/1ferver/res/current_idfavs.txt", "wb")
        f:write(current_idfavs) -- save current idfav info to another file
        f:close()
        clear.caches() -- clear system caches
        sys.alert("Restore idfav succeeded")
    else
        sys.alert("Restore idfav failed")
    end
else
    sys.alert("Open file failed")
end

Note: Uses sys.alert, app.quit