diff --git a/ota/h5/index-v6.html b/ota/h5/index-v6.html
index 8aae133..96fbd09 100644
--- a/ota/h5/index-v6.html
+++ b/ota/h5/index-v6.html
@@ -32,35 +32,38 @@ h1{font-size:20px;color:#fff;margin:0}
 <button class="btn btn-download" onclick="applyUpdate()" id="btnApply" disabled>下载更新</button>
 <div class="log" id="log"></div>
 <script>
+var channel='stable';
 var dlUrl='',dlVer='',dlSha='';
 var BASE='https://git.childish-ghost.com/LukeMackin/Yuzu-GCA/raw/branch/main/ota';
 
 function selectCh(el,ch){
  document.querySelectorAll('.chip').forEach(function(c){c.className='chip chip-off'});
  el.className='chip chip-on';
+ channel=ch;
  log('channel: '+ch)
 }
 function log(m){document.getElementById('log').innerText+=m+'\n'}
 function checkUpdate(){
- fetch(BASE+'/version.txt?t='+Date.now(),{cache:'no-store'})
- .then(r=>{if(!r.ok)throw Error('HTTP '+r.status);return r.text()})
- .then(function(t){t=t.trim();log('remote: '+t);
-  var parts=t.split('|');var remoteVer=parts[0];dlUrl=parts[1]||'';dlSha=parts[2]||'';
-  if(!dlUrl)dlUrl=BASE+'/h5/index-v'+remoteVer.replace('0.1.0-dav-android-','')+'.html';
-  if(remoteVer!=='0.1.0-dav-android-6'){dlVer=remoteVer;
+ var manFile='/manifest-'+channel+'.json';
+ log('checking '+manFile+' ...');
+ fetch(BASE+manFile+'?t='+Date.now(),{cache:'no-store'})
+ .then(function(r){if(!r.ok)throw Error('HTTP '+r.status);return r.json()})
+ .then(function(j){log('remote: '+j.h5_version);
+  dlUrl=j.h5_url;dlSha=j.h5_sha256||'';
+  if(!dlUrl){log('ERR: no h5_url');return}
+  if(j.h5_version!=='0.1.0-dav-android-6'){dlVer=j.h5_version;
    log('*** NEW VERSION ***');document.getElementById('btnApply').disabled=false}
   else log('up to date')})
  .catch(function(e){log('ERR: '+e.message)})
 }
 function applyUpdate(){
  fetch(dlUrl+'?t='+Date.now(),{cache:'no-store'})
- .then(r=>{if(!r.ok)throw Error('HTTP '+r.status);return r.arrayBuffer()})
- .then(function(buf){
-  return crypto.subtle.digest('SHA-256',buf).then(function(hash){
-   var hex=Array.from(new Uint8Array(hash)).map(function(b){return b.toString(16).padStart(2,'0')}).join('');
-   if(dlSha&&hex!==dlSha){log('SHA256 MISMATCH!');return}
-   Android.saveCache(new TextDecoder().decode(buf));log('OK! restart app to apply')
-  })
+ .then(function(r){if(!r.ok)throw Error('HTTP '+r.status);return r.text()})
+ .then(function(t){
+  if(!dlSha){log('ERR: SHA256 required');return}
+  var h=Android.sha256(t);
+  if(h!==dlSha){log('SHA256 MISMATCH!');return}
+  Android.saveCache(t);log('OK! restart app to apply')
  })
  .catch(function(e){log('ERR: '+e.message)})
 }
diff --git a/ota/manifest-beta.json b/ota/manifest-beta.json
index 4068965..17b96e4 100644
--- a/ota/manifest-beta.json
+++ b/ota/manifest-beta.json
@@ -1 +1 @@
-{"version":"0.1.0","builds":{}}
+{"h5_version":"0.1.0-dav-android-6","h5_sha256":"6a25c8c5c1e2bacdac416885a0cd4754debf699344d63673cffcc91b5d646295","h5_url":"https://git.childish-ghost.com/LukeMackin/Yuzu-GCA/raw/branch/main/ota/h5/index-v6.html"}
diff --git a/ota/manifest-nightly.json b/ota/manifest-nightly.json
index 87136c9..17b96e4 100644
--- a/ota/manifest-nightly.json
+++ b/ota/manifest-nightly.json
@@ -1 +1 @@
-{"version":"0.1.0","builds":{"android":{"type":"apk","tag":"v0.1.0-dav-android-8","url":"https://git.childish-ghost.com/LukeMackin/Yuzu-GCA/releases/download/v0.1.0-dav-android-8/v0.1.0-dav-android-8-debug.apk","sha256":"b2451a398ea2dd34e585c5ec4529d6654451c9b9ab4ddf4a25ec9b032f0ac2bf","size":3506569,"channel":"nightly","minVersion":"0.1.0"}}}
+{"h5_version":"0.1.0-dav-android-6","h5_sha256":"6a25c8c5c1e2bacdac416885a0cd4754debf699344d63673cffcc91b5d646295","h5_url":"https://git.childish-ghost.com/LukeMackin/Yuzu-GCA/raw/branch/main/ota/h5/index-v6.html"}
diff --git a/ota/manifest-stable.json b/ota/manifest-stable.json
index 4068965..17b96e4 100644
--- a/ota/manifest-stable.json
+++ b/ota/manifest-stable.json
@@ -1 +1 @@
-{"version":"0.1.0","builds":{}}
+{"h5_version":"0.1.0-dav-android-6","h5_sha256":"6a25c8c5c1e2bacdac416885a0cd4754debf699344d63673cffcc91b5d646295","h5_url":"https://git.childish-ghost.com/LukeMackin/Yuzu-GCA/raw/branch/main/ota/h5/index-v6.html"}
diff --git a/ota/version.txt b/ota/version.txt
index 46a2201..b6e21aa 100644
--- a/ota/version.txt
+++ b/ota/version.txt
@@ -1 +1 @@
-0.1.0-dav-android-6|https://git.childish-ghost.com/LukeMackin/Yuzu-GCA/raw/branch/main/ota/h5/index-v6.html|a53319e28c5b9ce5da6799d9b2fe547f4391386f23b68ac10814567edd445188
\ No newline at end of file
+0.1.0-dav-android-6|https://git.childish-ghost.com/LukeMackin/Yuzu-GCA/raw/branch/main/ota/h5/index-v6.html|6a25c8c5c1e2bacdac416885a0cd4754debf699344d63673cffcc91b5d646295
\ No newline at end of file