diff --git a/CHANGELOG.md b/CHANGELOG.md
index e50c9c7..910719f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,12 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [8.3.1] - 2025-09-11
+
+### Fixed
+
+- Fix EOF bug in interfaceAdm()
+
 ## [8.3.0] - 2025-08-29
 
 ### Changed
diff --git a/src/VERSION b/src/VERSION
index ae9a76b..56b6be4 100644
--- a/src/VERSION
+++ b/src/VERSION
@@ -1 +1 @@
-8.0.0
+8.3.1
diff --git a/src/opengnsys/workers/oglive_worker.py b/src/opengnsys/workers/oglive_worker.py
index 537d3f5..7c1ec5e 100644
--- a/src/opengnsys/workers/oglive_worker.py
+++ b/src/opengnsys/workers/oglive_worker.py
@@ -266,12 +266,9 @@ class ogLiveWorker(ServerWorker):
 
     def interfaceAdmin (self, method, parametros=[]):
         if method not in ['ConsolaRemota', 'procesaCache']:
-            ## python
-            logger.debug (f'({method}) is a python method')
             exe = '{}/{}'.format (self.pathinterface, method)
             proc = [exe]+parametros
         else:
-            ## bash
             logger.debug (f'({method}) is a bash method')
             exe = '{}/{}'.format (self.pathinterface, method)
 
@@ -297,31 +294,38 @@ class ogLiveWorker(ServerWorker):
             #logger.debug ('no queue--not writing any PID to it')
             pass
 
-        sout = serr = ''
-        finished = False
-
         out_finished = False
         err_finished = False
+        finished = False
 
         buf_size = 4096
         stdout_buf = bytes()
         stderr_buf = bytes()
 
         while True:
-            ready_to_read, _, exceptions = select.select ([p.stdout, p.stderr], [], [p.stdout, p.stderr], 0.2)
+            check_read =  []
+            check_exceptions = []
+            if not out_finished:
+                check_read.append       (p.stdout)
+                check_exceptions.append (p.stdout)
+            if not err_finished:
+                check_read.append       (p.stderr)
+                check_exceptions.append (p.stderr)
+
+            ready_to_read, _, exceptions = select.select (check_read, [], check_exceptions, 0.2)
 
             if p.stdout in ready_to_read:
                 data = p.stdout.read(buf_size)
                 stdout_buf = stdout_buf + data
 
-                if len(data) < buf_size:
+                if 0 == len(data):
                     out_finished = True
 
             if p.stderr in ready_to_read:
-                data = p.stdout.read(buf_size)
+                data = p.stderr.read(buf_size)
                 stderr_buf = stderr_buf + data
 
-                if len(data) < buf_size:
+                if 0 == len(data):
                     err_finished = True
 
             if p.stdout in exceptions or p.stderr in exceptions:
@@ -335,12 +339,13 @@ class ogLiveWorker(ServerWorker):
 
 
         sout = stdout_buf.decode('utf-8', 'ignore').strip()
-        serr = stdout_buf.decode('utf-8', 'ignore').strip()
+        serr = stderr_buf.decode('utf-8', 'ignore').strip()
 
         try:
             p.wait (0.1)
             finished = True
         except subprocess.TimeoutExpired:
+            ## BUG: dejamos un zombie colgando
             pass