由于官方未提供8月2号的beta升级至正式的包，经本人研究，只要以下几步就可升级。
8月17号（即官方正式发布的beta包，直接用官方的beta升级包即可）

1. 修改pw_kmd_info、pw_kmd_paylog、pw_kmd_spread、pw_kmd_user表的表结构(安装包中有)
请到phpmyadmin中运行（就是你管理数据库的地方）
复制代码

1. DROP TABLE IF EXISTS `pw_kmd_info`;
2. CREATE TABLE IF NOT EXISTS `pw_kmd_info` (
3.   `kid` int(10) unsigned NOT NULL AUTO_INCREMENT,
4.   `fid` mediumint(8) unsigned NOT NULL DEFAULT '0',
5.   `uid` int(10) unsigned NOT NULL DEFAULT '0',
6.   `tid` int(10) unsigned NOT NULL DEFAULT '0',
7.   `status` tinyint(1) unsigned NOT NULL DEFAULT '0',
8.   `starttime` int(10) unsigned NOT NULL DEFAULT '0',
9.   `endtime` int(10) unsigned NOT NULL DEFAULT '0',
10.   PRIMARY KEY (`kid`),
11.   KEY `idx_tid` (`tid`)
12. ) ENGINE=MyISAM ;
13. 
    
14. 
    
15. DROP TABLE IF EXISTS `pw_kmd_paylog`;CREATE TABLE IF NOT EXISTS `pw_kmd_paylog` (
16.   `id` int(10) unsigned NOT NULL AUTO_INCREMENT,  `kid` int(10) unsigned NOT NULL DEFAULT '0',
17.   `fid` mediumint(8) unsigned NOT NULL DEFAULT '0',  `uid` int(10) unsigned NOT NULL DEFAULT '0',
18.   `sid` int(10) unsigned NOT NULL DEFAULT '0',  `type` tinyint(3) unsigned NOT NULL DEFAULT '0',
19.   `money` decimal(14,2) unsigned NOT NULL DEFAULT '0.00',  `status` tinyint(3) unsigned NOT NULL DEFAULT '1',
20.   `createtime` int(10) unsigned NOT NULL DEFAULT '0',  PRIMARY KEY (`id`),
21.   KEY `idx_fid` (`fid`),  KEY `idx_uid` (`uid`),
22.   KEY `idx_createtime` (`createtime`)) ENGINE=MyISAM;
23. 
    
24. 
    
25. DROP TABLE IF EXISTS `pw_kmd_spread`;CREATE TABLE IF NOT EXISTS `pw_kmd_spread` (
26.   `sid` int(10) NOT NULL AUTO_INCREMENT,  `displayorder` int(10) UNSIGNED NOT NULL DEFAULT '0',
27.   `name` varchar(50) NOT NULL DEFAULT '',  `day` smallint(3) UNSIGNED NOT NULL DEFAULT '0',
28.   `price` decimal(14,2) UNSIGNED NOT NULL DEFAULT '0.00',  `discount` DECIMAL( 2, 1 ) UNSIGNED NOT NULL DEFAULT '0.0',
29.   PRIMARY KEY (`sid`)) ENGINE=MyISAM;
30. 
    
31. 
    
32. DROP TABLE IF EXISTS `pw_kmd_user`;CREATE TABLE IF NOT EXISTS `pw_kmd_user` (
33.   `uid` int(10) UNSIGNED NOT NULL DEFAULT 0,  `phone` varchar(15) DEFAULT NULL,
34.   `realname` varchar(15) NOT NULL DEFAULT '',  `invoice` varchar(100) NOT NULL DEFAULT '',
35.   `address` varchar(200) NOT NULL DEFAULT '',  PRIMARY KEY (`uid`)
36. ) ENGINE=MyISAM;

2.更新pw_threads表字段及索引
到phpmyadmin中运行

ALTER TABLE `pw_threads` ADD `specialsort` TINYINT UNSIGNED NOT NULL DEFAULT 0;
ALTER TABLE `pw_threads` DROP INDEX `idx_fid_ifcheck_topped_lastpost` ,
ADD INDEX `idx_fid_ifcheck_specialsort_lastpost` ( `fid` , `ifcheck` , `specialsort` , `lastpost` )
3.上传85to87的升级包(注意是85to87)
4.运行pw87betato87.php进行升级(文件在87beta升级至87的包中)