diff --git a/services/wolf.sh b/services/wolf.sh
index 43c93bd..30c926b 100644
--- a/services/wolf.sh
+++ b/services/wolf.sh
@@ -1820,6 +1820,33 @@ def update_field(lines, wolf_name, field, new_value):
                     return True
     return False
 
+def update_scalar_field(lines, wolf_name, field, new_value):
+    # Same block-bounding as update_field, but for a single-line scalar
+    # string field (image, icon_png_path) that Wolf never reformats across
+    # multiple lines. update_field's array logic (which scans forward
+    # hunting for a closing ']') isn't safe to reuse here — a scalar line
+    # has no ']' of its own and that scan would run off into an unrelated
+    # array field further down the same block (e.g. 'ports = []'),
+    # corrupting it. Confirmed needed live: a stale 'image' field (e.g. the
+    # games-on-whales/desktop -> xfce rename) was NOT refreshed by
+    # update_field, since only 'mounts'/'env' were ever passed to it — an
+    # already-installed app's broken image reference survived every
+    # reinstall/'./manage.sh apps' re-run until this was added.
+    for i, line in enumerate(lines):
+        if f"name = '{wolf_name}'" in line:
+            block_start = i
+            while block_start > 0 and lines[block_start].strip() != '[[profiles.apps]]':
+                block_start -= 1
+            block_end = i + 1
+            while block_end < len(lines) and lines[block_end].strip() not in ('[[profiles.apps]]', '[[profiles]]'):
+                block_end += 1
+            for j in range(block_start, block_end):
+                if lines[j].lstrip().startswith(field + " = '"):
+                    indent = lines[j][:len(lines[j]) - len(lines[j].lstrip())]
+                    lines[j] = f"{indent}{field} = '{new_value}'\n"
+                    return True
+    return False
+
 with open(cfg, 'r') as f:
     lines = f.readlines()
 
@@ -1846,6 +1873,8 @@ for key in list(CATALOG.keys()):
     if already:
         ok = update_field(lines, wolf_name, 'mounts', new_mounts)
         ok = update_field(lines, wolf_name, 'env', new_env) or ok
+        ok = update_scalar_field(lines, wolf_name, 'image', app['image']) or ok
+        ok = update_scalar_field(lines, wolf_name, 'icon_png_path', app['icon']) or ok
         if ok:
             updated.append(app['title'])
     else:
@@ -3244,6 +3273,33 @@ def update_field(lines, wolf_name, field, new_value):
                     return True
     return False
 
+def update_scalar_field(lines, wolf_name, field, new_value):
+    # Same block-bounding as update_field, but for a single-line scalar
+    # string field (image, icon_png_path) that Wolf never reformats across
+    # multiple lines. update_field's array logic (which scans forward
+    # hunting for a closing ']') isn't safe to reuse here — a scalar line
+    # has no ']' of its own and that scan would run off into an unrelated
+    # array field further down the same block (e.g. 'ports = []'),
+    # corrupting it. Confirmed needed live: a stale 'image' field (e.g. the
+    # games-on-whales/desktop -> xfce rename) was NOT refreshed by
+    # update_field, since only 'mounts'/'env' were ever passed to it — an
+    # already-installed app's broken image reference survived every
+    # './manage.sh apps' re-run until this was added.
+    for i, line in enumerate(lines):
+        if f"name = '{wolf_name}'" in line:
+            block_start = i
+            while block_start > 0 and lines[block_start].strip() != '[[profiles.apps]]':
+                block_start -= 1
+            block_end = i + 1
+            while block_end < len(lines) and lines[block_end].strip() not in ('[[profiles.apps]]', '[[profiles]]'):
+                block_end += 1
+            for j in range(block_start, block_end):
+                if lines[j].lstrip().startswith(field + " = '"):
+                    indent = lines[j][:len(lines[j]) - len(lines[j].lstrip())]
+                    lines[j] = f"{indent}{field} = '{new_value}'\n"
+                    return True
+    return False
+
 with open(cfg, 'r') as f:
     lines = f.readlines()
 
@@ -3273,6 +3329,8 @@ for key in list(CATALOG.keys()):   # preserve display order
     if already:
         ok = update_field(lines, wolf_name, 'mounts', new_mounts)
         ok = update_field(lines, wolf_name, 'env', new_env) or ok
+        ok = update_scalar_field(lines, wolf_name, 'image', app['image']) or ok
+        ok = update_scalar_field(lines, wolf_name, 'icon_png_path', app['icon']) or ok
         if ok:
             updated.append(app['title'])
     else: