diff --git a/doc/guide/troubleshooting.rst b/doc/guide/troubleshooting.rst
index d286b6d..10767b1 100644
--- a/doc/guide/troubleshooting.rst
+++ b/doc/guide/troubleshooting.rst
@@ -14,3 +14,32 @@ Gowin device could not communicate since last bitstream flashed. (issue `#206 <h
 
 Gowin's FPGA may fails to be detected if **JTAGSEL_N** (pin 08 for *GW1N-4K*) is used as a GPIO.
 To recover you have to pull down this pin (before power up) to recover JTAG interface (*UG292 - JTAGSELL_N section*).
+
+JTAG init failed
+================
+
+Avoid using USB hubs and connect it directly to your PC USB port.
+
+
+Tang Primer 20k program slow and stucked (issue `#250 <https://github.com/trabucayre/openFPGALoader/issues/250>`_)
+==================================================================================================================
+
+Check your openFPGALoader version:
+
+.. code:: bash
+
+    openFPGALoader -V
+
+If it is older than release then v0.9.0, install the most recent version (from commit `f5b89bff68a5e2147404a895c075773884077438 <https://github.com/trabucayre/openFPGALoader/commit/fe259fb78d185b3113661d04cd7efa9ae0232425>`_ or later).
+
+Cannot flash Tang Nano 9k (issue `#251 <https://github.com/trabucayre/openFPGALoader/issues/251>`_)
+===================================================================================================
+
+This is a device issue, erase its Embedded Flash using Official GoWin Programmer (preferentially in Windows) and SRAM too, then you can use openFPGALoader again.
+
+Unable to open FTDI device: -4 (usb_open() failed) (issue `#245 <https://github.com/trabucayre/openFPGALoader/issues/245>`_)
+============================================================================================================================
+
+Edit your `/etc/udev/rules.d/99-ftdi.rules` file exchanging your programming device permissions.
+
+For more information, check the udev section from `this guide <install.rst>`_
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