sm801.php

<?php
$req = array(
    "method" => "get_all_builds",
    "params" => array(
        "device" => "icesky_msm8992_user", // ro.product.device + "_" + ro.build.type
        "version" => "2.5.3-2016012303-user-is", // ro.smartisan.version
        "buildtime" => "1453489594", // ro.build.date.utc
        "deviceid" => "990006210028584", // IMEI
        "flag" => "0", // rooted
        )
    );
$req = json_encode($req);
var_dump($req);
$url = "https://ota.smartisan.com/update.php";
$headers = array(
    "Cache-Control: no-cache",
    "Content-Type: application/octet-stream",
    "Content-Length: ". strlen($req),
);
$curl = curl_init($url);
curl_setopt($curl, CURLOPT_VERBOSE, 1);
curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, 0);
curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, 0);
curl_setopt($curl, CURLOPT_POST, 1);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
curl_setopt($curl, CURLOPT_USERAGENT, "com.smartisanos.updater/5.1.1-64");
curl_setopt($curl, CURLOPT_HTTPHEADER, $headers);
curl_setopt($curl, CURLOPT_POSTFIELDS, $req);
$res = curl_exec($curl);
var_dump($res);