diff --git a/README.md b/README.md
index c5a2c1f0..e9ad10a7 100644
--- a/README.md
+++ b/README.md
@@ -585,14 +585,14 @@ copyparty can invoke external programs to collect additional metadata for files
 | browse files    | yep | yep  | yep  | yep  |  yep  | yep  | yep | yep  |
 | thumbnail view  |  -  | yep  | yep  | yep  |  yep  | yep  | yep | yep  |
 | basic uploader  | yep | yep  | yep  | yep  |  yep  | yep  | yep | yep  |
-| up2k            |  -  |  -   |  -   |  -   |  yep  | yep  | yep | yep  |
+| up2k            |  -  |  -   | `*1` | `*1` |  yep  | yep  | yep | yep  |
 | make directory  | yep | yep  | yep  | yep  |  yep  | yep  | yep | yep  |
 | send message    | yep | yep  | yep  | yep  |  yep  | yep  | yep | yep  |
 | set sort order  |  -  | yep  | yep  | yep  |  yep  | yep  | yep | yep  |
 | zip selection   |  -  | yep  | yep  | yep  |  yep  | yep  | yep | yep  |
 | file rename     |  -  | yep  | yep  | yep  |  yep  | yep  | yep | yep  |
 | file cut/paste  |  -  | yep  | yep  | yep  |  yep  | yep  | yep | yep  |
-| navpane         |  -  | `*1` | `*2` | yep  |  yep  | yep  | yep | yep  |
+| navpane         |  -  | `*2` | yep  | yep  |  yep  | yep  | yep | yep  |
 | image viewer    |  -  | yep  | yep  | yep  |  yep  | yep  | yep | yep  |
 | video player    |  -  | yep  | yep  | yep  |  yep  | yep  | yep | yep  |
 | markdown editor |  -  |  -   | yep  | yep  |  yep  | yep  | yep | yep  |
@@ -603,8 +603,8 @@ copyparty can invoke external programs to collect additional metadata for files
 
 * internet explorer 6 to 8 behave the same
 * firefox 52 and chrome 49 are the last winxp versions
-* `*1` causes a full-page refresh on each navigation
-* `*2` only public folders (login session is dropped) and no history / back-button
+* `*1` yes, but extremely slow (ie10: 1 MiB/s, ie11: 270 KiB/s)
+* `*2` causes a full-page refresh on each navigation
 * `*3` using a wasm decoder which can sometimes get stuck and consumes a bit more power
 
 quick summary of more eccentric web-browsers trying to view a directory index:
diff --git a/copyparty/web/up2k.js b/copyparty/web/up2k.js
index 444ed9ad..ffaeb42b 100644
--- a/copyparty/web/up2k.js
+++ b/copyparty/web/up2k.js
@@ -511,7 +511,7 @@ function up2k_init(subtle) {
             import_js('/.cpr/deps/' + fn, unmodal);
 
             if (is_https)
-                ebi('u2foot').innerHTML = shame + ' so <em>this</em> uploader will do like 500kB/s at best';
+                ebi('u2foot').innerHTML = shame + ' so <em>this</em> uploader will do like 500 KiB/s at best';
             else
                 ebi('u2foot').innerHTML = 'seems like ' + shame + ' so do that if you want more performance <span style="color:#' +
                     (sha_js == 'ac' ? 'c84">(expecting 20' : '8a5">(but dont worry too much, expect 100') + ' MiB/s)</span>';
@@ -805,13 +805,13 @@ function up2k_init(subtle) {
         for (var a = 0; a < good_files.length; a++) {
             var fobj = good_files[a][0],
                 name = good_files[a][1],
-                fdir = '',
+                fdir = get_evpath(),
                 now = Date.now(),
                 lmod = fobj.lastModified || now,
                 ofs = name.lastIndexOf('/') + 1;
 
             if (ofs) {
-                fdir = name.slice(0, ofs);
+                fdir += url_enc(name.slice(0, ofs));
                 name = name.slice(ofs);
             }
 
@@ -1263,7 +1263,7 @@ function up2k_init(subtle) {
             try { orz(e); } catch (ex) { vis_exh(ex + '', '', '', '', ex); }
         };
 
-        xhr.open('HEAD', t.purl + t.name, true);
+        xhr.open('HEAD', t.purl + uricom_enc(t.name), true);
         xhr.send();
     }
 
@@ -1340,12 +1340,13 @@ function up2k_init(subtle) {
                     return;
                 }
 
-                if (response.purl !== t.purl || response.name !== t.name) {
+                var rsp_purl = url_enc(response.purl);
+                if (rsp_purl !== t.purl || response.name !== t.name) {
                     // server renamed us (file exists / path restrictions)
-                    console.log("server-rename [" + t.purl + "] [" + t.name + "] to [" + response.purl + "] [" + response.name + "]");
-                    t.purl = response.purl;
+                    console.log("server-rename [" + t.purl + "] [" + t.name + "] to [" + rsp_purl + "] [" + response.name + "]");
+                    t.purl = rsp_purl;
                     t.name = response.name;
-                    pvis.seth(t.n, 0, linksplit(t.purl + t.name).join(' '));
+                    pvis.seth(t.n, 0, linksplit(uricom_dec(t.purl)[0] + t.name).join(' '));
                 }
 
                 var chunksize = get_chunksize(t.size),
diff --git a/copyparty/web/util.js b/copyparty/web/util.js
index 44ff15cd..fc6efcfa 100644
--- a/copyparty/web/util.js
+++ b/copyparty/web/util.js
@@ -331,6 +331,16 @@ function uricom_enc(txt, do_fb_enc) {
     }
 }
 
+function url_enc(txt) {
+    var parts = txt.split('/'),
+        ret = [];
+
+    for (var a = 0; a < parts.length; a++)
+        ret.push(uricom_enc(parts[a]));
+
+    return ret.join('/');
+}
+
 
 function uricom_dec(txt) {
     try {