Advertisements Please Note: This thread is for the Bolt, not Bolt+. I am no longer using the Bolt, I have upgraded to the Bolt+. Considering the Bolt+ has a 3TB HDD, I personally think this is "enough" for me and won't be attempting to upgrade the drive. Bolt+ Users, feel free to report any such 4 Flashing Lights issues on this thread, if you choose to upgrade your drives. The software may be identical, anyways so any behaviors may be the same regardless if using the Bolt or Bolt+. I upgraded my Bolt to 4TBs a few months ago. It was working fine until this week. TWICE, there were instances were all four lights were flashing. The first time, I just unplugged my Bolt for 20 minutes. This fixed the problem. It didn't work tonight. I will say that I had Verizon FiOS Internet/TV/Phone. Starting in April, Verizon sold off their lines in a few states to Frontier. I'm one of those states (in California). So here's the question. What exactly is the problem? Is it my TV provider going out? (which could be the case considering there had been several complaints about Frontier since the switch) Is there something wrong w/ my Bolt? (hard drive, firmware update)? I noticed that my Bolt had been running hot this week, but to be honest, I hadn't checked on heat prior to the problem. EDIT 5/14/2016 Make - STDR4000100 Drive type - Internal Installation Method - Installed drive, run setup to 1st screen, unplugged it, plugged into PC, ran MFSR1003.zip, plugged back into TIVO and re-ran setup to finish, done. Date of Hard Drive Upgrade 3/13/2016 - Was working flawlessly until 5/13/2016 Confirmed that my Frontier FiOS cable service is working just fine (still had DVR) and that the culprit is my TiVo Bolt. Possible that the 20.6.1 Update caused a problem?? EDIT 5/15/2016 I E-mailed TiVo support on 5/14/2016. Heard back the next day. I explained that I have a TiVo Bolt 500 GB with 4 lights flashing and have owned it for a few months and that it worked fine up until the last few days when the update was pushed out. I tried their suggestion: Unplug the CableCARD and everything else, except for the HDMI, then plug the Power cable back in. For me, this included the CableCARD, Power cable and Coax cable. This did nothing. A friend of mine installed the 4TB HDD. It had worked fine since Mid-March. When I have a chance, I'll have him come over and swap the old one back in. EDIT 11/11/2016 If you decided to purchase the STDR4000100, check the firmware version before you do ANYTHING. I'm not sure how to do it. If you have firmware version 0004, do not even bother. It will not work. If your firmware version is 0001, it probably will work. Chances are, if you buy this drive NEW, it'll have the most updated firmware, 0004, unless there's a newer firmware revision. Source: Starting with Post #366 - 4TB 2.5" drive for Bolt There IS another solution, but it's not pretty. Search around the forum for those that've replaced the SATA cable, and either cut a hole in the back of the Bolt and mounted the port to it, or left the cover open and plugged the cable in. In either case, you have to purchase a WD Red HDD and put it inside a specific Rosewill external enclosure, so you can manage the temperature. You are limited to an 8TB HDD. The cable is probably $5 and the external enclosure is about $40, give or take. I will caution you in saying that I have not followed up with individuals that have tried this approach to see if their Bolts are still working or not. If you have the Seagate drive, do not even try to purchase this particular enclosure, along with a bay size converter. It won't fix your problems. I tried that and still got the same issues. Had I known about the link posted above beforehand, I wouldn't have bothered, but unfortunately this information came out much later. EDIT 11/21/2016 (To Be Continued) Here are a list of known drives that will fail, that is, may or may work under certain conditions and may end up failing after an unspecific amount of time. Seagate - STDR4000100 - This drive may work if and only if the firmware on the drive is 0001. You must have purchased this drive early on for such condition to exist. If you have this drive, return it if you can and get something different or use it for a different application. Use Seagate Tools for Windows to determine which firmware version you have, if it's not listed on the device itself EDIT 11/22/2017 (To Be Continued) Wow I haven't edited this OP in just over a year. I've had zero problems with my Bolt+. I highly recommend the upgrade, even though it may be costly, and there may not be a guarantee that TiVo would transfer the service over. I'm not sure how that works. I plan on editing this post again very soon, so stay tuned. For now, I do not recommend trying to upgrade your Bolt's Hard Drive. Even the user who had reported no problems on both of their Bolts, finally started having an issue on one of their Bolts. They were using the aforementioned Seagate drive, Firmware 001. So, it doesn't sound like having Firmware 001 is a sure bet, but more along the lines of "YMMV". I'm going to do some research on what users have reported, using the other solution for expanding the drive, which is replacing the exiting SATA cable with something that connects to an external HDD. That will be my next update. Considering that I haven't really looked into this in over a year, I haven't kept up. So, it'll take me some time to do the research, but I'll try and compile it sooner, than later.