UC540 issues after factory password reset

Question

Hi All
Our companies UC540 BRI phone system had username and password set by previous system admin, who has now left the business and refused to provide us with the details. It has fallen to me to resolve this and I followed some fairly straight forward instructions to connect through the console port using PuTTY to break into the bootstrap and reset them. All was going well but then we had a power outage half way through the process and now all I get is garbled text in the console port, see example below.
"b▒▒$礤▒▒▒▒懤▒▒▒&▒$@$#  ▒▒▒F▒▒▒$▒䅇▒▒秥▒▒▒LJ▒▒▒▒b▒▒▒ń▒▒▒Ĥ▒ť▒▒▒▒D▒GC▒ ▒▒▒Ť▒▒▒▒▒▒Ĥ▒▒▒▒▒▒䅆▒ħfb"▒▒džaBc▒▒▒▒▒C▒▒▒▒愤▒ĄĄ▒ńLJ▒Ć▒▒▒▒Ň▒ĥ▒C▒▒▒▒愤▒ĄĄ▒ńLJ▒Ć▒▒▒▒Ň▒ĥ▒CCC▒▒▒▒dž▒▒凅▒▒▒▒▒▒d▒熧▒▒▒䄥礄兄"
Things tried
When I hit "CTRL" + "Break" in the console terminal it still stops what I assume is the bootup sequence, but the output in the console is unintelligible (mix of chinese and english characters and symbols.
When I type commands they are also unintelligble and don't match the keystrokes.
I have tried adjusting the baud rate as I read it can cause this, so I modified it from 9600 to 115200 and the result was even more uninteligible.
Flow control was also set to "None".
Firstly have we bricked the system, or is simply a matter of uploading new firm ware via a TFTP session and can anyone please guide me through the process of reflashing/resetting the UC540 BRI, or point me where I can find this info?
Thanks in advance
Daniel

Answer 1

Hi there ,  Thank you for visiting the HP Support Forums and Welcome! This is a great site to get answers and ask questions. I seen your post on the HP Support Forums. I understand from your post that you are having an issue with the Wireless Internet Connection being intermittent.  Do you by chance have Bluetooth? Is it on? I have found a couple of documents for you to use to troubleshoot the Wireless issues you are experiencing.   The first document I found for you is called Using Automated Troubleshooting (Windows 10, 8). This document describes how to use the automated troubleshooting tools in Windows. These tools use a combination of installed and online applications made to detect and resolve many computer problems, such as problems with networking, system performance, and hardware devices. Although automated troubleshooting cannot find and correct every problem, it is a useful tool that can often save you time and effort. The second document I found for you is called Troubleshooting Wireless Network and Internet (Windows 8). The steps in this document provide tools that have been found helpful in solving many problems that can occur with wireless network and Internet connections. The reason I asked you about Bluetooth is because I found a document called Intermittent Wireless Connection with Intel Centrino Wireless-N 2230 and Advanced-N 6235 Bluetooth Combo Wireless Modules (Microsoft Windows 8). 
Please follow these provided troubleshooting steps, re-post and let me know how everything went. Thank you! Have a great day!